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Posted: 3/11/2019 9:23:32 PM EDT
[#1]
Quote HistoryOriginally Posted By Conner378:
Daniel Defense supplying NSWC, CRANE, and USSOCOM with BBK’s (bolt barrel kits)  https://www.youtube.com/watch?v=wR-5PXF-la0finally sourced an earlier colt upper and i'm pretty stoked about it. raised c anchor harvey forging. looks like a true mod 0 build with mostly period correct parts is in the works. 
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AZ, USA
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Posted: 3/11/2019 9:34:04 PM EDT
[#2]
Quote HistoryOriginally Posted By JLAudio: thats cool and makes sense. people freak out over DD nowadays (politics) but they make some pretty sweet barrels. finally sourced an earlier colt upper and i'm pretty stoked about it. raised c anchor harvey forging. looks like a true mod 0 build with mostly period correct parts is in the works. https://i.imgur.com/cER4Vp8.jpg |
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Posted: 3/11/2019 9:36:46 PM EDT
[#3]
Quote HistoryOriginally Posted By krdt:
Well, well... looks like I get to use my preferred barrel and be correct at the same time :D. Admittedly, I wasn't exactly losing sleep over whether my DD barrels were 100% confirmed correct; but if they are, so much the better. Quote HistoryOriginally Posted By krdt:
Originally Posted By Conner378:
Daniel Defense supplying NSWC, CRANE, and USSOCOM with BBK’s (bolt barrel kits) https://www.youtube.com/watch?v=wR-5PXF-la0Admittedly, I wasn't exactly losing sleep over whether my DD barrels were 100% confirmed correct; but if they are, so much the better. |
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Posted: 3/11/2019 9:37:25 PM EDT
[Last Edit: krdt]
[#4]
Quote HistoryOriginally Posted By Akin:
Speaking of Daniel Defense,. does anyone know the diameter of the gas p ort on DD 10.3 barrels? I bought min elast year during their event, and I see now that apparently the gas port is supposed to be widened or something for a Mk.18... I sent them an email asking about it, but they haven't responded yet. Quote HistoryOriginally Posted By Akin:
Originally Posted By krdt:
Originally Posted By Conner378:
Daniel Defense supplying NSWC, CRANE, and USSOCOM with BBK’s (bolt barrel kits) https://www.youtube.com/watch?v=wR-5PXF-la0Admittedly, I wasn't exactly losing sleep over whether my DD barrels were 100% confirmed correct; but if they are, so much the better. ETA: I should add that if it's newer than approximately spring of 2017, it's .070"; if it's prior to 2017, it's liable to be a ghastly .082"+. |
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Posted: 3/11/2019 9:41:36 PM EDT
[#5]
Quote HistoryOriginally Posted By krdt: It's .070", which is proper Crane spec. ETA: I should add that if it's newer than approximately spring of 2017, it's .070"; if it's prior to 2017, it's liable to be a ghastly .082"+. |
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Posted: 3/11/2019 9:48:26 PM EDT
[#6]
Quote HistoryOriginally Posted By Akin:
Well... I bought it last summer. Is there any way to tell when it was manufactured? Quote HistoryOriginally Posted By Akin:
Originally Posted By krdt: It's .070", which is proper Crane spec. ETA: I should add that if it's newer than approximately spring of 2017, it's .070"; if it's prior to 2017, it's liable to be a ghastly .082"+. In any event, you'll be able to tell just by firing it whether you have .070" or .082" - if it can still function with an H3 and Sprinco Red, you'll know you have a .082" ;p. |
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IA, USA
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Posted: 3/11/2019 10:41:50 PM EDT
[#7]
It’s a work in progress
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Posted: 3/11/2019 10:44:59 PM EDT
[#8]
Got the big pieces out of the way. What 10.3" barrel is everyone using?
Found this Vero Beach marked NT4 to go with it.  Attached File |
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USA
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Posted: 3/11/2019 10:58:07 PM EDT
[#9]
Quote HistoryOriginally Posted By krdt: It's .070", which is proper Crane spec. ETA: I should add that if it's newer than approximately spring of 2017, it's .070"; if it's prior to 2017, it's liable to be a ghastly .082"+. |
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USA
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Posted: 3/11/2019 10:59:30 PM EDT
[#10]
Quote HistoryOriginally Posted By krdt: It's .070", which is proper Crane spec. ETA: I should add that if it's newer than approximately spring of 2017, it's .070"; if it's prior to 2017, it's liable to be a ghastly .082"+. |
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Posted: 3/11/2019 11:37:14 PM EDT
[#11]
Quote HistoryOriginally Posted By ShortyB:
June/July of 2017 is when they made the switch to .070 Quote HistoryOriginally Posted By ShortyB:
Originally Posted By krdt: It's .070", which is proper Crane spec. ETA: I should add that if it's newer than approximately spring of 2017, it's .070"; if it's prior to 2017, it's liable to be a ghastly .082"+. |
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Posted: 3/11/2019 11:47:10 PM EDT
[#12]
@MILSPEC556
All roads lead to gas port sizes. |
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AL, USA
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Posted: 3/11/2019 11:53:48 PM EDT
[#13]
Quote HistoryOriginally Posted By 11b4v: I'm with you here ref the SF lights; just traded for a reissue M952V and really like the high lumen output. Only reason I have a WMX200 is that I found it in an out of the way gunshop a few years and was able to talk the shop owner down from $300 to $150.
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IL, USA
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Posted: 3/11/2019 11:59:37 PM EDT
[#14]
Quote HistoryOriginally Posted By Conner378:
Here is a better forum for the URGI's https://www.ar15.com/forums/ar-15/Official-M4A1-USASOC-URG-I-and-Clone-Picture-and-Discussion-Thread/118-722381/&page=117 |
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USA
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Posted: 3/12/2019 12:05:38 AM EDT
[#15]
Quote HistoryOriginally Posted By krdt: One of my DD Mk18 URGs had an inspection date of 04/20/17 and it has a .070" port; I've also heard of a few others from March 2017 that had .070" as well. |
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Posted: 3/12/2019 12:57:02 AM EDT
[#16]
Quote HistoryOriginally Posted By DontBuryMe:
@MILSPEC556 All roads lead to gas port sizes. |
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Posted: 3/12/2019 9:09:58 AM EDT
[Last Edit: WSAR15]
[#17]
Who offers today a reasonable MK18 Mod O Socom (10.3" with Front Sight) upper?
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TX, USA
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Posted: 3/12/2019 9:49:40 AM EDT
[#18]
Quote HistoryOriginally Posted By WSAR15:
Who offers today a reasonable MK18 Mod O Socom (10.3" with Front Sight) upper? It might be cheaper to actually build it, I have about $650 into mine from EE parts including the colt barrel sent to adco to do their magic. |
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Posted: 3/12/2019 9:52:28 AM EDT
[#19]
Quote HistoryOriginally Posted By MILSPEC556:
What goes around has already gone around. What goeth will cometh. All roads lead to gas port diameter pissing match |
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Posted: 3/12/2019 9:58:36 AM EDT
[#20]
Quote HistoryOriginally Posted By walkinginadangerzone: Thoroughbread seems like the cheapest at $870. It might be cheaper to actually build it, I have about $650 into mine from EE parts including the colt barrel sent to adco to do their magic. |
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Posted: 3/12/2019 10:21:15 AM EDT
[Last Edit: wissota4]
[#21]
Quote HistoryOriginally Posted By WSAR15: I found one at DSA for $549 - wonder if its GTG https://dsarms.com/p-17126-ds-arms-ar15-mk18-103-556x45mm-service-series-upper-receiver-assembly.aspx I've had good luck with dsa in the past too. |
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USA
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Posted: 3/12/2019 11:57:26 AM EDT
[#22]
Does anybody actually prefer the MK18/Block I over the cqbr Block II?
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Posted: 3/12/2019 12:23:02 PM EDT
[Last Edit: Bhavin22]
[#23]
Quote HistoryOriginally Posted By UndrGrndPrdcts:
Does anybody actually prefer the MK18/Block I over the cqbr Block II? block ll is best block 
Kidding aside I like both. The simplicity of block l is awesome and the over the top look on the block ll is just sick. |
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Posted: 3/12/2019 12:43:48 PM EDT
[#24]
Why is the heavier 77-grain Mk 262 cartridge preferred in these rifles?
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Posted: 3/12/2019 4:22:00 PM EDT
[#25]
Quote HistoryOriginally Posted By wissota4:
Andro also sells an upper or just barrel assembly. I've had good luck with dsa in the past too. It’s not Colt or DD, but it’s chrome-lined and all that jazz. |
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Posted: 3/12/2019 6:48:25 PM EDT
[#26]
Quote HistoryOriginally Posted By WSAR15:
Why is the heavier 77-grain Mk 262 cartridge preferred in these rifles? |
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Posted: 3/12/2019 7:52:57 PM EDT
[Last Edit: Teamafx]
[#27]
Duplicate Post
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Posted: 3/12/2019 7:53:55 PM EDT
[#28]
Quote HistoryOriginally Posted By JLAudio:
If anyone needs a TD Shorty QD stubby grip in FDE, Euro Optic has an unbelievable price on them. These have been out of stock everywhere for a while. Link "This product has been discontinued" |
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Posted: 3/12/2019 8:03:19 PM EDT
[#29]
Quote HistoryOriginally Posted By Teamafx: Now Says...... "This product has been discontinued" |
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Posted: 3/12/2019 9:04:19 PM EDT
[#30]
10.3" CQBR Block II Upper done:
Parts list, all new: Colt Keyhole Upper 10.3" Virgin Colt Factory Barrel MK12 Gas Block SF4P KAC 300m Rear KAC Taupe 99051 Front Colt BCG/CH EXPS3-0 in Tan with SU231A laser markings 
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Posted: 3/12/2019 9:30:42 PM EDT
[#31]
Quote HistoryOriginally Posted By ShortyB:
June/July of 2017 is when they made the switch to .070 Quote HistoryOriginally Posted By ShortyB:
Originally Posted By krdt: It's .070", which is proper Crane spec. ETA: I should add that if it's newer than approximately spring of 2017, it's .070"; if it's prior to 2017, it's liable to be a ghastly .082"+. It's not too hard to measure to see if its .070 or a larger size. |
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Posted: 3/12/2019 9:59:43 PM EDT
[#32]
Quote HistoryOriginally Posted By sawgunner73:
I bought one of the 10.3 DD barrels from Western Sport a few years ago when they had a sale. The gas port is .070" It's not too hard to measure to see if its .070 or a larger size. Quote HistoryOriginally Posted By sawgunner73:
Originally Posted By ShortyB:
Originally Posted By krdt: It's .070", which is proper Crane spec. ETA: I should add that if it's newer than approximately spring of 2017, it's .070"; if it's prior to 2017, it's liable to be a ghastly .082"+. It's not too hard to measure to see if its .070 or a larger size. |
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USA
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Posted: 3/12/2019 10:42:54 PM EDT
[#33]
Quote HistoryOriginally Posted By sawgunner73: I bought one of the 10.3 DD barrels from Western Sport a few years ago when they had a sale. The gas port is .070" It's not too hard to measure to see if its .070 or a larger size. What I was referring to was when DD began using.070 for all 10.3 barrels, |
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Posted: 3/13/2019 12:23:23 AM EDT
[#34]
Black phase tactical has a couple of colt stripped uppers in stock in case anyone is on the hunt. I believe they are cage code marked.
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USA
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Posted: 3/13/2019 12:33:47 AM EDT
[#35]
I need help.
Barrel is not centered in RIS II when looking from muzzle end. I’ve Disassembled this twice. I don’t know everything but have been building ARs for 20 years and 8-10 RIS II uppers. Could the face of the receiver cause this? |
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Posted: 3/13/2019 12:42:54 AM EDT
[#36]
Quote HistoryOriginally Posted By ShortyB:
I need help. Barrel is not centered in RIS II when looking from muzzle end. I’ve Disassembled this twice. I don’t know everything but have been building ARs for 20 years and 8-10 RIS II uppers. Could the face of the receiver cause this? |
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USA
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Posted: 3/13/2019 12:55:24 AM EDT
[#37]
Quote HistoryOriginally Posted By MILSPEC556:
I ran into this issue before as did another member at the same time- a new mount up plate got both of us squared away. We got them for free via Caroline Britton @ Daniel Defense |
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Posted: 3/13/2019 8:27:56 AM EDT
[Last Edit: Akin]
[#38]
Quote HistoryOriginally Posted By krdt:
Given the time frame purchased, chances are good it's .070". If you still have the original packaging, you can probably find out exactly when it was manufactured. Otherwise, I'm not sure you'll be able to tell unless it's new enough to have an Mk12 gas block versus the older single taper pinned low profile block. In any event, you'll be able to tell just by firing it whether you have .070" or .082" - if it can still function with an H3 and Sprinco Red, you'll know you have a .082" ;p. Quote HistoryOriginally Posted By krdt:
Originally Posted By Akin:
Originally Posted By krdt: It's .070", which is proper Crane spec. ETA: I should add that if it's newer than approximately spring of 2017, it's .070"; if it's prior to 2017, it's liable to be a ghastly .082"+. In any event, you'll be able to tell just by firing it whether you have .070" or .082" - if it can still function with an H3 and Sprinco Red, you'll know you have a .082" ;p. Also, what’s a sprinco red? A special spring for the buffer? |
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Posted: 3/13/2019 8:34:25 AM EDT
[Last Edit: Akin]
[#39]
Quote HistoryOriginally Posted By ShortyB:
June/July of 2017 is when they made the switch to .070 Quote HistoryOriginally Posted By ShortyB:
Originally Posted By krdt: It's .070", which is proper Crane spec. ETA: I should add that if it's newer than approximately spring of 2017, it's .070"; if it's prior to 2017, it's liable to be a ghastly .082"+. |
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TX, USA
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Posted: 3/13/2019 9:54:37 AM EDT
[#40]
Quote HistoryOriginally Posted By WSAR15:
I found one at DSA for $549 - wonder if its GTG https://dsarms.com/p-17126-ds-arms-ar15-mk18-103-556x45mm-service-series-upper-receiver-assembly.aspx Quote HistoryOriginally Posted By WSAR15:
Originally Posted By walkinginadangerzone: Thoroughbread seems like the cheapest at $870. It might be cheaper to actually build it, I have about $650 into mine from EE parts including the colt barrel sent to adco to do their magic. |
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Posted: 3/13/2019 9:59:27 AM EDT
[#41]
Quote HistoryOriginally Posted By walkinginadangerzone: If you don't care about the upper receiver being a colt then it should be GTG from dsa. I'm just not sure about their gas port size on their barrels. |
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Posted: 3/13/2019 10:00:49 AM EDT
[Last Edit: WSAR15]
[#42]
Originally Posted By walkinginadangerzone: If you don't care about the upper receiver being a colt then it should be GTG from dsa. I'm just not sure about their gas port size on their barrels. |
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Posted: 3/13/2019 4:09:53 PM EDT
[#43]
Quote HistoryOriginally Posted By Akin:
It has the low profile gas block with a single pin, which I actually thought was identical,to a mk.12 gas block? Also, what’s a sprinco red? A special seping for the buffer? Quote HistoryOriginally Posted By Akin:
Originally Posted By krdt:
Originally Posted By Akin:
Originally Posted By krdt: It's .070", which is proper Crane spec. ETA: I should add that if it's newer than approximately spring of 2017, it's .070"; if it's prior to 2017, it's liable to be a ghastly .082"+. In any event, you'll be able to tell just by firing it whether you have .070" or .082" - if it can still function with an H3 and Sprinco Red, you'll know you have a .082" ;p. Also, what’s a sprinco red? A special seping for the buffer? |
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Posted: 3/13/2019 4:24:02 PM EDT
[#44]
Quote HistoryOriginally Posted By wissota4:
I was told .072 at one time from DSA for their 10.3s Quote HistoryOriginally Posted By wissota4:
Originally Posted By walkinginadangerzone: If you don't care about the upper receiver being a colt then it should be GTG from dsa. I'm just not sure about their gas port size on their barrels. |
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Posted: 3/13/2019 4:35:24 PM EDT
[#45]
There is a cut down 10.3” colt SOCOM with gas tube and mk12 block in the ee for 265. No idea on rd count. Really surprised it’s not sold.
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Posted: 3/13/2019 6:34:31 PM EDT
[#46]
Quote HistoryOriginally Posted By WSAR15:
Why is the heavier 77-grain Mk 262 cartridge preferred in these rifles? CD |
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Posted: 3/13/2019 7:15:04 PM EDT
[#47]
Quote HistoryOriginally Posted By monkeypunch: Any accuracy reports on the 10.3" barrels from DSA? As badly as i want a DD, I can't justify nearly $300 on it. |
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Posted: 3/13/2019 9:47:37 PM EDT
[#48]
Quote HistoryOriginally Posted By Rothperson87:
Got the big pieces out of the way. What 10.3" barrel is everyone using? http://i66.tinypic.com/9u15i0.jpg Found this Vero Beach marked NT4 to go with it. https://www.AR15.Com/media/mediaFiles/462226/07324878-1DF1-42AF-847F-1C2D9B0DBD49_jpeg-874554.JPG |
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KY, USA
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Posted: 3/13/2019 11:09:04 PM EDT
[#49]
Quote HistoryOriginally Posted By JLAudio:
Black phase tactical has a couple of colt stripped uppers in stock in case anyone is on the hunt. I believe they are cage code marked. only 8 left... 
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USA
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Posted: 3/13/2019 11:14:35 PM EDT
[Last Edit: rpoL98]
[#50]
Quote HistoryOriginally Posted By ShortyB:
I need help. Barrel is not centered in RIS II when looking from muzzle end. I’ve Disassembled this twice. I don’t know everything but have been building ARs for 20 years and 8-10 RIS II uppers. Could the face of the receiver cause this? on a Colt SOCOM barrel, and the receiver flange has been trued. I was gonna take some measurements of the barrel extension flange thickness to see if that's what's cocking the rail to one side. I did order an additional set of RIS II mounting hardware ($40). will see if that works. |
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