SP1 info request are now daily.  I have a bunch of rifles to add but have not found the time.  Figure the this will get us by for now:

Started with Don Francis's old data base, and added more rifles. The rifles I added are yours and mine, and a bunch off Gunbroker, Gunsamerica, and Auctionarms.

1983-1985

2116xx CARBINE no forge code on upper

2101xx CARBINE CM forging, does not look like there is a forge code on the FSB, A2 grip

2082xx CARBINE CH forging, C and bell FSB

207796 no details

20258X CM upper, Coltguard nickle finish, FSB has a diamond with a B inside and two smaller letters inside to the right of the B that look like a over a P an I

202xxx nickle finish

200720 CH forge code upper, barrel marked CHROME BORE, C and bell FSB

198xxx C and bell FSB

191678 CARBINE CH forging, barrel marked CHROME BORE

19097X no details

184355 CARBINE, can't make out the forge code, nickle finish, A2 grip,

183XXX CARBINE CH forging, barrel marked C MP CHROME BORE

1812XX CM forge code, Hammer has "C" in circle and a 6 or 9 in circle with FP cutout, bobbed disconector, barrel marked C MP chrome bore, front site has a "B1" in diamond, unshrouded bolt carrier C stamped with FA notches, bolt etched MPC, ejector has either 3 or 4 coils with white buffer

179XXX unusual in that it has a modern carrier with no forward assist cuts

1767XX, Upper Forging marked C M, Barrel marked C MP CHROME BORE, 16" Barrel Collapsible stock, bolt carrier marked- C

176728 can't make out the forge code

175xxx CARBINE CH forging

175091 CARBINE, later lower forging with curved reinforcment by receiver extention

1757xx CARBINE can't make out the forge code, no forge code on FSB

174XXX CM forging, barrel marked CHROME BORE, bell an C FSB

174247 has replacement lone star handguards

173XXX made in 1983

1982

1730XX CARBINE CM forging, Barrel marked C MP CHROME BORE, FSB with "C" near top, "bell" on lower area, purchased NIB in late Nov. 82

162991 CM forge code

155427 close up of left side

1562xx CARBINE

154XXX no details

145xxx. CM forge code barrel marked CHROME BORE

144957 forward assist cuts in carrier

141xxx CM forging, made in 1982

140320 CARBINE, CM forging, barrel marked CHOMRE BORE

1981

139415 CARBINE CM forging, barrel marked CHROME BORE

1385xx CM forging, barrel marked CHROME BORE, C and bell FSB

1312xx CM forging, barrel marked C MP B, C and bell FSB

130476 CM forging, C and bell FSB

1980

128949 Carbine, "C" forged front sight base, Barrel stamped "C MP Chrome Bore", A1 Flash hider with lock washer, and the wrench flats indexed in the 90 degree vertical position, rivited front sling swivel, CM forged A1 reciever, no forward assist, square proof stamp forward of ejection port door, factory staked Vinyl coated collapsable butt stock marked with an "NN" in an oval and a "1" under the latch, "C" stamped full circle AR carrier, non shrouded firing pin, "MPC" marked bolt, Forward assist notched carrier, ejector not marked.

128132 trap door buttstock, flash suppresor swapped out for a three prong

12402X CARBINE, C M Forge code below sight "C" in a square behind the delta ring, Full circle C marked bolt carrier MPC bolt. Don't see any mark on the extractor. White spring insert, C mark on FSB, C MP CHROME BORE on top of bbl. A1 FH, metal 2 position nylon coated buttstock, still has the paint on the buffer tube nut stakes and on the bolt stop pin.

123xxx C and bell FSB

122XXX can't make out forge code, barrel marked CHROME BORE,

121027 CM forge code, A1 birdcage FH, Barrel marked "C MP Chrome Bore", FSB Marked "C",
no proof stamps on upper, "C" marked full circle AR carrier, "C" marked ejector, 4 coil spring with white insert, "MPC" marked bolt, bobbed disconnector, factory touch up paint on mag release roll pin area on both upper and lower

120xxx can't read the upper forge code, barrel marked CHROME BORE, made in 1980

1195xx CM forge code, no forge code FSB, barrel marked CHROME BORE

1182XX CM forging, no forge code on FSB, barrel marked CHROME BORE

117623 Carbine

116221 Carbine CM forge code upper, barrel marked CHROME BORE

1114xx Carbine CM forge code upper, made in 1980

106919 CM forge code, A1 birdcage FH, Barrel marked "C MP Chrome Bore", "C" marked FSB, "C" marked AR carrier, "C" stamped ejector with white insert, "MPC" marked bolt, bobbed disconnector, factory touch up paint on mag release roll pin area

1979

100473 CM forge code, forward assist cuts, barrel marked CHROME BORE, C marked FSB

1042X2 CM forge code, made in 1979, barrel marked CHROME BORE, selector has notch on right side

979XX CM forge code, rollmarked FIREARMS DIV, barrel Marked C MP Chrome Bore, Front Site Base Marked with a C,
Birdcage Flash, Trap Door Stock,, bolt marked MPC, Carrier marked C, No marks on the extractor, purchased 78/79

96XXX having some issues with the anodizing coming off the lower, purchased 78/79

95xxx CM forge code upper

1978

92341 no details

921xx CARBINE, unmarked FSB, Barrel was marked C MP CHROME BORE, but has been cut to 11. 5 inches, as the piece was Class 3d and made into an XM177E2 clone in 1979. Can't give you original upper forge markings. Upper was replaced w/a big hole forward assist type some years back, and idiot me sold the smooth side upper off, 1978

90269 lone star replacement handguards

894XX forward assist cuts,

87059 Carbine, looks like a CM forge code upper, barrel marked C MP B

858xx

80142 CM forge code upper, barrel marked CHROME BORE, lower roll marked Firearms Division

1977

76728 lower roll marked Firearms Division

76xxx barrel marked CHROME BORE

74304 Roll Mark Colt's Patent Firearms Mfg. Co, Forge Mark on Upper C M, Barrel Marked C MP Chrome Bore, FSB shows a C and a Bell with something inside, hard to make out, Bolt Carrier Marked C, Bolt marked MPC, Trap Door Buttstock

74778 lower roll marked Patent Firearms, barrel marked CHROME BORE

74284 lower roll marked Patent Firearms, CM forge code upper

73175 lower roll marked Patent Firearms

70xxx lower roll marked Patent Firearms

69496 lower roll marked Patent Firearms, CM forge code, bird cage, barrel marked "C MP Chrome,
"C" marked M16 carrier with non-staked gas key (replacement?), "C" marked ejector with 4 coils spring, black insert (replacment?), "MPC" marked bolt, bobbed disconnector

69349 CM forge code upper

68862 bird cage, trap door

663XX CK forge code, Hammer has "C" in circle, a Horshoe 'U' in a square between the ejection port and barrel, 20" barrel with C MP CHROME BORE on it, 'C' under the front site, A1 Bird cage flash hider, unmarked carrier

640xx no upper forge code, C and Bell FSB, barrel marked CHROME BORE, duck bill, made in 1977

632XX no forge code, forward assist cuts, C on FSB, newer lower forging with curved reinforcment by receiver extention

62316 CK forge code upper, Front Sight Base - Unmarked, Barrel Markings - C MP CHROME BORE, Flash Hider - Birdcage, Bolt Carrier - C Mark & Forward Assist Notches, Lower Proof Stamp - Triangle w/VP Inside - Forward End Starboard Side, Buttstock - Standard w/trapdoor, Hammer - Early Style w/C in circle & 2 in circle stampings


1976

57xxx forge code upper, can't make it out

55757 no forge code, trap door fixed swivel, bird cage

51502 no upper and barrel, bolt has white extractor buffer

1975

463xx no forge code upper, C and Bell FSB, duck bill, barrel marked CHROME BORE

44885 missing roll marks SEMI, FIRE, and manufactures info, grip replaced with A2

44435 no details

44XXX C marked carrier, bird cage

43461 bird cage flash suppresor, trap door buttstock

42786 no forge code, forward assist cuts, trap door fixed swivel, bird cage, C and bell FSB, drain hole in buttstock screw

1974

37690 bird cage

349XX barrel is marked C MP B, C & bell FSB, no forge code upper

33400 no forge code, bird cage, forward assist cuts, trap door fixed swivel

32XXX lower only, no notch cut in hammer with forge codes, trap door

30XXX bird cage

1973

27834 C MP B, rivet, no forge code C & Bell

253XX barrel marked C MP B, C & bell FSB, no forge code upper, no + on lower made in 1973

25XXX lower only, notch cut in hammer with forge codes (possible swap out?), no + on lower, receiver extention not pinned on, wrong A2 grip and buttstcok

24431 1973 manufacture

2325X carrier has FA cuts, no forge code upper, C and Bell FSB?

?????? no forge code upper, barrel marked C MP B, duck bill, C carrier, and MPC bolt, this is a parts kit

219XX no forge code, Barrel marked: C MP C, Bolt marked: MPC, Extractor marked: C, FSB: C & bell,
Birdcage FH, Non trapdoor stock w/ rear swivel, A1 pistol grip

214XX Barrel marked C MP C, Bolt marked MPC, Extractor marked C, No forge code on upper, Birdcage suppressor, Trapdoor stock, 20 rnd mag

208XX no forge code, barrel marked C MP C, birdcage, carrier marked C, no markings on bolt, C and bell marked FSB, riveted swivel, hammer marked C, disconnector not marked, trigger marked with a 2 on left lower side, purchased NIB late summer of 1973

1972

176XX barrel marked: C MP C on bottom, bolt marked: MPC, no forge codes on upper, birdcage flash hider, solid buttplate, C on front sight base

17XXX no trap door, no roll pin for receiver extention

17482 barrel marked CMP C, fixed rear swivel, A1 flash hider, no upper forge code, forward assist cuts

17230 C MP C marked barrel, fixed swivel, duck bill

1971

165XX three prong, swivel buttstock, rivet on swivel

164XX bird cage flash hider, swivel buttstock, forward assist cuts, full curve 30 round mag

163xxx fixed rear swivel, birdcage replaced with three prong, black paint on lower left and front of mag well

162XX Birdcage, Plain hard rubber (?) buttplate W/drain hole top screw, black carrier "C" stamped, + on lower, ,notches in the black carrier, C MP C ubarrel, bobbed disconnector, roll pinned swivels, rubberized and black nylon sling, Came with spare Edgewater buffer & spring

1970

15271 three prong, no hole in selector, no pin on, swivel, pin on front swivel. C MP C

1969

14418 solid buttplate 1969 Three prong

14300 barrel marked c2 12, "polished" FSB, duck bill, roll pin on swivel, + on lower, made in 1969

13192 three prong, no trap door, pinned on front swivel, no roll pin for receiver extention,

13XXX duck bill

1968

12760 three prong, + on lower, MP by FSB, 12 near muzzle, roll pinned front swivel, receiver extention not pinned in, no trap door

12,XXX replacement buttstock, grip, port door, duck bill

11577 duck bill

11XXX three prong, no trap door

10859 no pin in extension, unmarked front sight base, run Together "MP" stamped on right side of barrel between the FSB legs, small "S" and "12" stamped under barrel near Flash Hider, 3 Prong Flash Hider with lock washer, raised Plus (+) on right side of lower recever near pivot pin, no divot in selector, pinned sling swivel on buttstock, front sling swivel attached with a roll pin, full circle unmarked AR carrier, "MP" marked bolt, no forward assist notches, unmarked ejector.

10095 no pin in extension, duck bill

09991 solid selector, three prong swivel, made in 1968

1967

087XX solid selector, pinned in receiver extension, + on lower receiver "polished" FSB, black Colt's sling with no buckle

1966

078xx barrel marked MP & S 12, MP marked parked bolt, parked carrier, full auto firing pin, machined firing pin retainer, hole in buttstock screw, made in 1966

071xx "polished" FSB hole in selector, parked bolt and carrier, no FA cuts in carrier, pinned in receiver extention, edgewater buffer, don't see a drain hole in buttstock screw, roll pin front swivel made in 1966

06198 no details

06081 no details

05889 & 90 hole in selector, pinned on receiver extension, + on lower receiver, does not have the holes drilled in handguard heat shields, old style gas tube, half round gas carrier key, ramped carrier without exposed firing pin, weep hole drilled for ejector spring, bolt is parked, barrel marked MP on right side inbetween FSB "legs" on right side & a 12 near the muzzle, roll pin front swivel, "polished" FSB with no drain hole for front sight, duck bill, polished FSB, shipped Oct 1966

05542 barrel marked with a 12, chrome bolt, pinned on recever extention, hole in selector, + on lower, forged FSB with no drain hole for the post, roll pinned swivel, 12 near muzzle, VP proof mark & the M is upside down, chrome bolt, parked semi carrier,

053XX pinned on recever extention, hole in selector, + on lower,


1965

05141 hole in selector, parked carrier with auto sear trip removed, round carrier key, chrome bolt, machined retainer, proof and M marked barrel, "polished" FSB, roll pin on front swivel

048xx M and proof marked barrel, chrome MP marked bolt, parked carrier, full auto firing pin, machined firing retainer, green buffer tube, no hole in buttstock screw, made in 1965

04240 chrome bolt, parked carrier, hole in selector, don’t see a hole in buttstock screw, black Colt's sling with no buckel

03909 chrome bolt, parked carrier, no firing pin catch on hammer, hole in selector

037xx new port door

03XXX pinned on receiver extention, hole in selector, + on lower,

03325 barrel M and proof mark, with S 12, plastic coated swivels, chrome MP marked bolt with weep hole for ejector
spring, parked carrier, full auto flat headed firing pin, two stakes on carrier key bolts, carrier key round, machined parked firing retainer, early port door, + on lower, hole in selector, "polished" FSB, short disconnector, made in 1965

1964

Just picked up a '64 vintage (SP 018XX) Colt SP1. Pretty nice shape, previous owner must not have known what a cleaning kit was for though.  

For the SP1 database: It has a parked carrier & machined firing pin retainer, carrier auto sear trip cut back, chrome bolt w/ no MP marking, barrel has an upside down marked M & proof & 12, + on lower, full auto flat headed firing pin, edgewater buffer, pinned buffer tube, two stakes on carrier key bolts, three prong hider, coated sling swivels. No drain hole in the buttstock screw, no forge codes or proof marks on the upper receiver, early Armalite type ejection port door and also has the hole in the selector switch. FSB appears to be forged w/o drain hole. I haven't had the handguards off yet to see if it has the early carbon steel gas tube and no drain hole handguards though. No sear block, large pivot hole.

015XX Colt sling with no "buckle", parked carrier & machined firing pin retainer, carrier auto sear trip cut back, round carrier key, no firing pin catch on hammer, bolt marked MP, barrel marked M & proof & 12, + on lower, full auto flat headed firing pin, edgewater buffer, two stakes on carrier key bolts

01457 no details, made in 1964

014xx M and proof marked barrel, plastic coated swivels, chrome MP marked bolt, parked carrier, auto firing pin, machined firing retainer, green buffer tube, no hole in buttstock screw

01348 Barrel marked "M" with "VP" Triangle proof upside-down next to M between spars of front sight.  "+" under ejection port cover.  No marking on parked bolt carrier, "M" electro-penciled on Nickel/crome bolt.  Hammer has "E" inside of "C" inside of circle on left side

01042 cast FSB, barrel marked M and proof early 64, and early port door, parked bolt carrier with auto trip cut back, hole in selector, edgewater buffer, round carrier key, + on lower, plastic coated swivel, long disconnector, no firing pin catch on hammer

003xx hole in take down pin. Looks like machined FSB?

00231 has old port door, transitional bolt stop & cast FSB? (this one has some miss matched parts)

00159 no details

00005 full chrome M16 bolt group, modern bolt stop, holes in selector

Oh yeah, post details on your here, and I will add it once I get a chance.

SN 48xx

Edgewater buffer, parked slickside semi carrier (no shiite) , chrome MP bolt, MV 12 marked barrel 3 prong fh, smooth fsb w/o drain hole), non-drilled stock screw, early gastube (maybe stainless, magnet won't stick), black handguards w/o drain holes,  

No monkey business here. Even the buffer tube has the original roll pin holding it on!

Check out that sling. It is as it was.

Not mine yet but 555xx. COLT'S PATENT FIREARMS marked. Only the lower though, no details, sorry. Guess its from '76.

I'll soon have an SP1. Bought it on GunBroker. Should have it next week, or the week after. I'll edit this post with the info when I get it.


Here's the info on my SP1. Picked it up last week, but with the holiday rush didn't have time to go over it. The seller told me it was a local PD trade in. Loal PD didn't clean their weapons very well.

Colt AR-15 Model SP1 Ser. SP 178XXX

Slickside upper marked "C M".

Barrel marked  "C MP CHROME BORE", A1 FH, no markings on the FSB.

"C" AR15 bolt carrier with FA notches, no markings on the bolt.

Here's another one for you.  I got to look at and actually touch sn 007xx

I even got to look inside

It had slickside semi carrier (2nd one I've seen this week ) chrome MP bolt, machined parked firing pin retainer, early firing pin, MV 12 marked barrel, 3 prong, Edgewater buffer, no forge codes, no firing pin notch on hammer, early gastube and handguards.

So, I can assume that my SP1, ser. no. 865xx was made in 1978?

I just bought a police trade in Colt SP1 in exc condition. The serial number range is 108XX. I am not certain if it has had components swapped out or if it is in original unmolested condition. The features are as follows.

Serial #108XX

The Barrel is marked "MP" between the front site posts and "C" behind the three prong flash hider. The chamber appears to be chrome plated.

The bolt is grey/black finished with an "MP" marking behind the locking lugs.

The AR-15 bolt carrier is grey/black finished and has forward assist notches. The carrier does not appear to have any markings. The screws on the gas key have two "round" shaped stakes.

The firing pin is the modified light flat head type

The buttstock is the non-trap door type with drain hole screw. The rear sling swivel is plastic coated.

Edgewater buffer with non-pinned tube

The lower has raised "+" near pivot area. The pins and selector are the non-dimpled type.

The hammer has a 2 inside a circle marking.

The front sling swivel is plastic coated and is connected to the FSB by a roll pin.

The sling is green cotton canvas with parkerized slide keeper and black buckle

The upper receiver is the non forward assist type. A small faint triangle is visible forward of the ejection port. The ejection port cover has the rectangular detent.

Just got my lower today. SP55537 COLT PATENT FIREARMS MFG CO marked. 1976

515xx here. It is no longer in SP1 configuration, when I bought it it had been converted into an M4gery. I plan on remedying that as soon as some of my other projects are completed.

I was just looking at my 601 clone and I was thinking...

My upper that I'm using is an SP1 large hole but it has no proof marks forward of the ejection port and no forge codes below the rear sight. The "arrow and R" marking is also the "fat" type that is shown below and the 3 on the adjustment wheel isnt "angled" and is "rounded". Any idea about it? Estimate on year? Maybe 1976 or earlier?

ok, what do i have and when was it made and what is approx. value?

Colt SP1 #SP1849XX

slick side upper marked "C" & "H"

Factory Colt 3x scope


mint condition, approx. 40 rounds through it

PS...don't tell the AK guys I was over here....

Originally Posted By HillbillyAL: ok, what do i have and when was it made and what is approx. value? Colt SP1 #SP1849XX slick side upper marked "C" & "H" Factory Colt 3x scope mint condition, approx. 40 rounds through it PS...don't tell the AK guys I was over here....

1983-1985

Reserved. I'll post my SP1 info when I get home.

EDIT:

I'm home. My serial is SP6897x

I have no reliable info about the date. Pics coming soon.

Colt AR-15 Model SP1 Ser. SP 177XXX
Slickside upper marked "C M".
Barrel marked "C MP CHROME BORE", A1 FH, C and Bell marked FSB, with tapered delta ring.
"C" AR15 bolt carrier with FA notches, MP marked bolt.

Slab side lower, large hole screw type front takedown pin with no spring or detent.  R 11 mark on right side.  Trapdoor buttstock.  Hammer has circle C with circle 7.

It had rifle handguards on it that I swapped out to triangular.  

Have some questions though.  

Did these ship with the A1 FH or 3 prong?  
Was the delta ring the flat style or the tapered style?  
Were the HGs triangular or rifle?  
Did the stock leave the factory with a trapdoor?

Not sure what was changed or updated, I think it's still in factory config except for the HGs, I think the triangular fits it's personality a lot better.

I have the chance to buy a Colt SP1 for a reasonable amount. I am kinda leery of the buy though because it appears to have a Full Auto style bolt. Nothing else is FA. Is a FA bolt in an AR an issue?

Originally Posted By Gun_Nut_2k1: I have the chance to buy a Colt SP1 for a reasonable amount. I am kinda leery of the buy though because it appears to have a Full Auto style bolt. Nothing else is FA. Is a FA bolt in an AR an issue?

No, it's completely legal as long as there are no FA lower parts. Buy it!

Colt mfg. Mod. SP1 Serial# 143XX   (1969)
3 prong flash hider
Barrel marked C2 bottom side.  Marked MP on right side of barrel between FH posts.
FSB machined smooth, no markings.  Bayonet lug.
Front sling swivel coated and roll pin.  
Shiney black triangle handguards.  
Smooth side upper receiver.  No forge codes.  A-1 rear sight assem.
Flat slip ring assem.
Small triangle stamp on right side of lower receiver just behind slip ring.
Non trapdoor rear buttstock.  Single screw with drain hole.  Rear sling swivel + roll pin.
Edgewater buffer assem.
Bolt carrier, semi circle, C stamp, left side.  Gas key Colt staked.  FA notches.
Colt bolt marked MP.

Ekie, when did SP1 carbines go into production?

Originally Posted By Blanco_Diablo: Ekie, when did SP1 carbines go into production?

The oldest one in the data base is a 1978.

12022X (uncertain year produced)
20" Rifle
A1 flash
Triangle HG
A1 grip
A1 Sights
Buttstock with trap door and fixed swivel

Lower markings;

COLT'S FIREARMS DIVISION
COLT INDUSTRIES
HARTFORD, CONN
USA

CAL..223
MODEL SP1
SER.SP12022X

touch up paint on mag release roll pin area on lower
www.imagestation.com/picture/sraid20/p9c0630bb0a8e340525cc55d97d36d2c4/fdb83eac.jpg

Upper markings;
Diamond shaped stamp in front of ejection port
Large front hole
Forge code C  M
www.imagestation.com/picture/sraid20/pff4bb46741b4216063fb289744568c40/fdb83ee5.jpg
bbl markings;
C MP CHROME BORE

Bolt is etched MPC
Carrier C marked
Notched carrier www.imagestation.com/picture/sraid20/pd6fae11b3b191bad01cd0547be200ed4/fdb83f29.jpg
www.imagestation.com/picture/sraid20/p12844f961747371cba132f188689015d/fdb83ec2.jpg
Hammer C marked

more pics here www.imagestation.com/album/index.html?id=4291803095

Postban? Where you been?  Surprised you remembered your password.

Originally Posted By Ekie: Postban? Where you been?  Surprised you remembered your password.

lol, that was easy. Remembering where my SP1 was, that was the hard part

I just bought SP1 #58x.  I also have pics of #13X and these 2 rifles are identical to the smallest detail so it is probable that they are from the same production run and possibly/probably assembled the same day.

--------------------------------------------------

'M' marked 14 twist bbl

Cast FSB

Early non-stainless gas tube

Chrome MP Bolt

Larger headed FP but not the 601 version

Parked machined FP retainer

Parked earliest pattern semi carrier

Key bolts with single centerpunch stakes

Parked key

Transitional bolt catch

Modified M16 trigger parts

Edgewater buffer

The following are center drilled:

Windage screw

Safety

Takedown pin

------------------------------------------

Too bad we can't come up with production dates

It would also be interesting to come up with a serial number span where they started changing to the VP 12 twist bbls.

CAN THIS POST BE MOVED TO THE RETRO FORUM?



I have 000694 - there's a post around here somewhere showing all the various parts, but I can't find it.  Search needs a lot of work.



Here's one picture; I can post more if the other thread is gone.  Note the hole in the selector and take-down pin, as well as the early-style transitional bolt catch.  Selector had a hole on the right side, too, as did the takedown pin. This gun had the Edgewater buffer, milled sight, chrome bolt with diagonal cuts behind the lugs, marked "M" and "P" but no "C" - park'd AR-15 (not M16) carrier, carrier key screws had one square stake apiece.


























































 

Model One, what bbl markings do you have ?

Thanks
rj

Originally Posted By Model_One: I have 000694 - there's a post around here somewhere showing all the various parts, but I can't find it.  Search needs a lot of work. Here's one picture; I can post more if the other thread is gone.  Note the hole in the selector and take-down pin, as well as the early-style bolt catch.  Selector had a hole on the right side, too, as did the takedown pin. This gun had the Edgewater buffer, milled sight, chrome bolt with diagonal cuts behind the lugs, marked "M" and "P" but no "C" - park'd AR-15 (not M16) carrier, carrier key screws had one square stake apiece. umdrive.memphis.edu/joutlan/public/ARFCOM/SP00694/00694_Left-05.jpg?uniq=-iikcl8 umdrive.memphis.edu/joutlan/public/ARFCOM/SP00694/00694_BoltStamp-01.jpg?uniq=-iikclk umdrive.memphis.edu/joutlan/public/ARFCOM/SP00694/00694_BoltGroup-01.jpg?uniq=-iikclo umdrive.memphis.edu/joutlan/public/ARFCOM/SP00694/00694_BoltKey-01.jpg?uniq=-iikclm umdrive.memphis.edu/joutlan/public/ARFCOM/SP00694/00694_RearSights-01.jpg?uniq=-iikcl4 umdrive.memphis.edu/joutlan/public/ARFCOM/SP00694/00694_UpperMarkings-017.JPG?uniq=-iikcky umdrive.memphis.edu/joutlan/public/ARFCOM/SP00694/00694_UpperStamps-01.jpg?uniq=-iikckw

WOW that even has the "transistional" bolt catch!

I have today adopted Colt AR-15 SP-1 Serial number SP1368xx

"C" and "M" in the indent under rear sight, a small Square with a "C" in it above front hinge screw on upper reciever. Smooth side reciever lacking forward assist.

"C" "MP" Chrome bore on barrel.

Full Birdcage flash suppressor "A1" type.

Front sight towr has "C" forged into it.

Bolt carrier closed rear made with Forward assist notches, "C" on bolt carrier and "MPC" on bolt.

Appears to have fired maybe 500 rounds, this thing is mint except for a little rust on the Firing port cover and a slight crack in the buttplate. Trapdoor butplate.

Came with 4- 20 round mags, all colt and universal. A Blank adapter, blanks and several stripper clips and a guide, and cotton canvas sling Also came with soft assault rifle case from Galati.

There's a sideways "M" on the right side of the barrel between the two rings of the FSB, and there's what looks like a "W" (upside-down in picture, hard to make out) on the lower right, up near the muzzle. [ETA: Upon closer examination, this is probably marked M1.]










 

I just put money down on a SP1 rifle, condition appears to be excellent overall, although the rifle was fired...and then put in a closet for 20+ years.

Details:

Serial: SP1792xx (83-85?)
Buttstock has a trap, and fixed swivel.
A1 flash hider
Carrier has the FA notches

Came with a cleaning kit, and probably the original sling (metal keepers). No mag, the gunshop will toss one in, though.

Price was $899, which seems quite reasonable given the superb condition. These are very rare in my area, and the last one I saw was well over 900 and it was in nowhere near as good condition. The last SP1 this particular shop had was $1200, and was a police trade in that they got from some distributor.

Hello all. This is my first post. I have  a Colt AR15 SP1 the serial number is SP1749##. Can anyone tell me what year it was likely manufactured and anything else about it and what to look for as far as markings to tell if it is original. I will try and list any markings that I see on it. It has a stamped "C" and "M" under the rear site adjustment wheel. On the top of barrell near flash suppressor is stamped " C MP  Chrome Bore". If anybody knows a realistic value as well. I bought it back in 1990 or 1991. I have been told it is worth over 2K but I am not sure. Thanks again. Pete

Picked up a SP1 CAR15 today

Serial 1912xx

Barrel marked C MP Chrome Bore
Upper has CH markings
FSB has C marking
aluminum coated 2 position car stock, flat slip ring, 6 hole handguards, slab side

Originally Posted By peteyffst11: Hello all. This is my first post. I have  a Colt AR15 SP1 the serial number is SP1749##. Can anyone tell me what year it was likely manufactured and anything else about it and what to look for as far as markings to tell if it is original. I will try and list any markings that I see on it. It has a stamped "C" and "M" under the rear site adjustment wheel. On the top of barrell near flash suppressor is stamped " C MP  Chrome Bore". If anybody knows a realistic value as well. I bought it back in 1990 or 1991. I have been told it is worth over 2K but I am not sure. Thanks again. Pete

Yours is only 4000 or so away from mine, so it dates from 83-85 just like mine.

As for worth..well...$900-1200, depending on accessories and condition, and how bad someone wants a genuine SP1.

It likely was worth 2k during the ban, since SP1 receivers were like gold since they were guaranteed preban, but since the expiration, values have gone down back to normal ranges.

It still has great value in the states that enacted their own bans that duplicated the 94 ban criteria, since there is no question that it is a preban receiver.

SP 00694

Barrel:
ETA: Marked "M" between sight base bands, very faint "W" at end of barrel near muzzle.
ETA: No markings under the handguards.
3-prong FH, but a bit thinner prongs than on later models. Not "duck bill" style, though.
Front sight milled, round post, heavy "UP" with arrow, C in a circle on left side.
ETA: Early style gas tube - magnet will adhere.
ETA: C stamped in breech end of barrel extentsion.

Upper
Marked c and VP just fore of ejection port.
L --> R on rear sight area of carrying handle.
Both apertures are pretty small.
Original style ejection cover.
T - style charging handle.
No cut-out for auto sear.

Lower
Big-hole, of course.
+ on right side near pivot hole.
Pinned edgewater buffer.
Early style black buffer tube with holes, no flats on rear end.
Takedown pin and selector have "divots" on both sides.
Mag release button is rings, not lines.
Bolt catch is transitional type.

Fire Control Group
Bolt is chromed, marked M and P, oriented 90 degrees off from usual MPC type marking.
Firing pin retaining pin is milled, parkerized.
Key is staked with one square punch on each hex-head screw.
Carrier is parked, NOT M16 type, first civilian style as per TBR.
Firing pin is not big-head style.
Trigger and disconnecter are M16 type, all other AR-15 types.
Hammer is not M16 type, but no notch, either.

Misc.
Sling swivels are plastic coated.
Rear swivel pivots, but doesn't rotate.
Sling is black M1/M14 style, but hook end has sewn loop around it with no buckle.
Furniture is matte black.
No hole in buttstock screw.

I am confused with determining the date for my new SP1 so any help would be appreciated.
It has a serial number SP1607*
Which appears thath it could fall under either 1971 or 1982 per the chart. I am going towards the 1982 but your assistance would be great.

Barrel: Marked "CMP chrome bore
No markings under the handguards. (maybe wrong but I have not had them off yet)
A1 birdcage and lock washer style washer
Front sight has a C near the front sight area and below it near the barrel is the bell with an M in it


Upper
Marked C M below rear sight area
L --> R on rear sight area of carrying handle.
Both apertures are pretty small.
Original style ejection cover.
T - style charging handle.
No forward assist
Armalite style flat handguard ring
Triangular hand guards


Lower
Big-hole, of course.
Early grip
butstock has trapdoor
Only the trap door is checkerd and the rest of the butstock appears to be plastic
Paint near the bold release

Fire Control Group
Bolt is chromed, marked M and P, oriented 90 degrees off from usual MPC type marking.
Firing pin retaining pin is not milled.
Key is staked with four points near hex-head screws.
Carrier is parked
Firing pin is not big-head style.
Trigger and disconnecter are M16 type, all other AR-15 types.
Hammer is marked with a circle 7 and a circle C

Misc.
Sling swivels are not plastic coated.
Sling is black M1/M14 style, but hook end has sewn loop around it with no buckle.
Furniture is matte black.
Hole in upper buttstock screw only.

Just acquired S/N SP865XX in a trade.  CK forge marked upper with typical Colt proofs forward of ejection port door.  Barrel marked CMP Chrome Bore.  C marked closed end parked bolt carrier with forward assist notches.  Parked MPC marked bolt. A1 trapdoor buttstock and birdcage flash hider.  Front sight base appears unmarked.  Slick side upper and unfenced, unreinforced lower of course. "Silent" type sling.

Here is my SP1:

Serial number - 1120XX

The upper receiver is a slick side. It has a C M forging, a small faint square with a C and a triangle is visible forward of the ejection port. The ejection port cover has the rectangular detent. It also has the small R and arrow for the sight directions.

The barrel is marked C MP CHROME BORE the chamber appears to be chrome plated and has an A1 bird cage flash suppressor.

Front sight has a diamond with a B4 in it.

The bolt is grey/black finished and is marked MP C and no markings on the extractor.

The AR-15 bolt carrier is grey/black finished and has forward assist notches. The carrier is marked with a C. The screws on the gas key are staked from the sides.

The firing pin looks like a standard AR15 type.

The charging handle is grey with three notches on the latch.

The buttstock is the trap door type without a drain hole screw. The rear sling swivel is a non swivel style. It also has the original cleaning kit still inside of it.

The buffer has a dimple in the middle of the face and a non-pinned tube.

The lower receiver pins and selector are the non-dimpled type and has touch up paint on mag release roll pin area.

The hammer has a 3 inside of a circle and a C inside of a circle along with a notch on top. It also has a bobbed disconnector.

The front sling swivel is plastic coated and is connected to the FSB by a rivet.

The sling is black cotton canvas with black slide keeper and black buckle.

The pistol grip has a C and an A inside of it.

Handguards, buttstock and pistol grip have a flat non reflective finish that is slightly textured.


Phessor

Firstly, I copied the previous post and made changes where appropriate. It was lazy I know, but why re-type everything when you don't have to.  My SP1 has the following:

Serial number - SP1004XX

The upper receiver is a slick side. It has a "C" & "M" forging, a "C" is stamped inside a small faint square forward of the ejection port. The ejection port cover has the rectangular detent. It also has the small R and arrow for the sight directions.

The barrel is marked C MP CHROME BORE the chamber appears to be chrome plated and has an A1 bird cage flash suppressor.

Front sight base has the "C" forging mark.

The bolt is grey/black finished and is marked MP C and no markings on the extractor.

The AR-15 bolt carrier is grey/black finished and has forward assist notches. The carrier is marked with a C. The screws on the gas key are staked from the sides.

The firing pin looks like a standard AR15 type.

The charging handle is grey with three notches on the latch.

The buttstock is the trap door type without a drain hole screw. The rear sling swivel is a non coated fixed style. It also has the original cleaning kit still inside of it.

The buffer has a dimple in the middle of the face and a non-pinned tube.

The lower receiver pins and selector are the non-dimpled type and has touch up paint on mag release roll pin area.

The hammer has a 3 inside of a circle and a C inside of a circle along with a notch on top.

The front sling swivel is plastic coated and is connected to the FSB by a rivet.

The sling is black cotton canvas with black slide keeper and black buckle.

The pistol grip has a C and an A inside of it.

Handguards, buttstock and pistol grip have a flat non reflective finish that is slightly textured.

Firstly, I copied the previous post and made changes where appropriate. It was lazy I know, but why re-type everything when you don't have to.  My SP1 has the following:

Serial number - SP1004XX

The upper receiver is a slick side. It has a "C" & "M" forging, a "C" is stamped inside a small faint square forward of the ejection port. The ejection port cover has the rectangular detent. It also has the small R and arrow for the sight directions.

The barrel is marked C MP CHROME BORE the chamber appears to be chrome plated and has an A1 bird cage flash suppressor.

Front sight base has the "C" forging mark.

The bolt is grey/black finished and is marked MP C and no markings on the extractor.

The AR-15 bolt carrier is grey/black finished and has forward assist notches. The carrier is marked with a C. The screws on the gas key are staked from the sides.

The firing pin looks like a standard AR15 type.

The charging handle is grey with three notches on the latch.

The buttstock is the trap door type without a drain hole screw. The rear sling swivel is a non coated fixed style. It also has the original cleaning kit still inside of it.

The buffer has a dimple in the middle of the face and a non-pinned tube.

The lower receiver pins and selector are the non-dimpled type and has touch up paint on mag release roll pin area.

The hammer has a 3 inside of a circle and a C inside of a circle along with a notch on top.

The front sling swivel is plastic coated and is connected to the FSB by a rivet.

The sling is black cotton canvas with black slide keeper and black buckle.

The pistol grip has a C and an A inside of it.

Handguards, buttstock and pistol grip have a flat non reflective finish that is slightly textured.

AK_Zeke

Here is my SP1 carbine:

Serial number - 1049XX

The upper receiver is a slick side. It has a C M forging, a small faint square with a C and a triangle is visible forward of the ejection port. The ejection port cover has the rectangular detent. It also has the small R and arrow for the sight directions.

The barrel is marked C MP B the chamber appears to be chrome plated and has an A1 bird cage flash suppressor.

Front sight has a C.

The bolt is grey/black finished and is marked MP C and no markings on the extractor.

The AR-15 bolt carrier is grey/black finished and has forward assist notches. The carrier is marked with a C. The screws on the gas key are staked from the sides.

The firing pin looks like a standard AR15 type.

The charging handle is grey with three notches on the latch.

The buttstock is a two positions CAR style that is coated and has a staked two position buffer tube with touch up paint on the staking.

The buffer has a round head and a non-pinned tube.

The lower receiver pins and selector are the non-dimpled type and has touch up paint on mag release roll pin area.

The hammer has a 3 inside of a circle and a C inside of a circle along with a notch on top. It also has a ringed selector inside.

The front sling swivel is plastic coated and is connected to the FSB by a rivet.

The sling is black cotton canvas with black slide keeper and black buckle.

The pistol grip has a C and an D inside of it.

Handguards, buttstock and pistol grip have a kind of shiny finish to them.


Phessor

I have SP1 441xx, 20", slick side, triangular, old school cool.
It is the first AR I bought & love it!

But just curious, what makes the SP1 desirable?

Thanks

Originally Posted By joelad: I'll soon have an SP1. Bought it on GunBroker. Should have it next week, or the week after. I'll edit this post with the info when I get it. Here's the info on my SP1. Picked it up last week, but with the holiday rush didn't have time to go over it. The seller told me it was a local PD trade in. Loal PD didn't clean their weapons very well. Colt AR-15 Model SP1 Ser. SP 178XXX Slickside upper marked "C M". Barrel marked  "C MP CHROME BORE", A1 FH, no markings on the FSB. "C" AR15 bolt carrier with FA notches, no markings on the bolt.

Sir: Can you tell my the notchs on the bolt ,but has  no forward ast. Ser. sp 655**. Thanks Tom

Originally Posted By October_V: But just curious, what makes the SP1 desirable?

The appearance, the history, the low weight, and the simplicity compared to currently offered rifles.

And for a Colt, they can be had "cheap" now that the high-speed rifles are being offered for sale with all the evil features intact. You can still build a clone cheaper with a NDS lower and a A1 upper, but that Colt Pony still adds mystique.

Also, it's a guaranteed "preban" gun to those in AW states, which can get you a nice premium.

Hey Model 1,
 Take a cleaning rod and a tight patch and check the twist rate of your bbl.

Thanks
rj

I found this site and dug out my SP1 AR 15 i bought it in 1979 when i was in the Army at Fort Carson, it's all original and is as follows


Ser # SP 133xxx
C under front site
C M under rear site
C MP chrome barrel
Collapsable stock
Bolt stamped C


How much is it worth nowadays. i've seen some at gun shows for $1600 but the price varies.

Just got this SP1, WARNING  its grimy, I took these photos as I was starting to clean it up, was in the rough for sure, and My camera shows more detail than I can see with the eye..

Details
Serial # SP 12214X
no marking on front site except "up" on post
Barrel marked "C MP Chrome Bore"  The M and P are like one letter squished.
Bolt carrier marked "C" and has forward assist notches
Bolt marked "MPC" again M and P squished and this whole marking is very light
Hammer marked with a circled "C"
Upper marked "CM" under sight adjustment and a funny looking cockeyed square with something unreadable in it in front of the trap door on the base of the handle

I was told it had a 3 prong FH on it originally but now had an A1

Can some one date this and tell me whats not original? I'm very new to old Colts, I just bought this because I thought it was very close to original, seems to be all colt but some things don't make sense to me  such as Forward Assist notches on a BC thats in a rifle thats got no Forward Assist.  I assumed thats not original but still Colt.

Photos, click for big ones..





































Sorry about all the photos just thought it would clearly define things.

I guess this thread isn't visited to often?

It's very sedate. :)

With regards to the foward assist bolt notches on the bolt carriers of SP1's, this is usually the rule, rather than the exception (which would be early SP1's).