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Posted: 11/15/2013 7:19:13 PM EST
[#1]
Quote HistoryOriginally Posted By RadOP:  thats just not right!Quote HistoryOriginally Posted By RadOP: Originally Posted By Postal0311: :-( https://lh4.googleusercontent.com/-0zhWkd7LLu4/UoaV_ciwGjI/AAAAAAAADYo/n-ZOhrAzf7c/s640/2013-11-15%252015.30.38.jpg Edit: How it came out of the box. thats just not right!Yeah that's no good. Who built it?
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Posted: 11/15/2013 7:20:04 PM EST
[#2]
Quote HistoryOriginally Posted By Postal0311:
:-( https://lh4.googleusercontent.com/-0zhWkd7LLu4/UoaV_ciwGjI/AAAAAAAADYo/n-ZOhrAzf7c/s640/2013-11-15%252015.30.38.jpg Edit: How it came out of the box. Out of the box from where??? |
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Posted: 11/15/2013 7:20:31 PM EST
[#3]
C'mon Postal, say their name!
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Posted: 11/15/2013 7:26:45 PM EST
[#4]
It is a used HCS upper, and it may have happened in shipping.
The rail is not in alignment with the upper or the barrel. The nut that holds it on was loose. Removing and reattaching the railed tube doesn't fix it, it ends up sitting right back there. I worry that the upper or barrel nut might be damaged. Anyone have any suggestions? |
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Posted: 11/15/2013 7:59:01 PM EST
[#5]
Quote HistoryOriginally Posted By Postal0311:
It is a used HCS upper, and it may have happened in shipping. The rail is not in alignment with the upper or the barrel. The nut that holds it on was loose. Removing and reattaching the railed tube doesn't fix it, it ends up sitting right back there. I worry that the upper or barrel nut might be damaged. Anyone have any suggestions? Take a picture of the barrel nut with the rail off. How is the barrel nut and gas tube...the gas tube goes through the barrel nut. How are the two indexing pins in the barrel nut...check the pin slots in the rail too... Pictures would help... 
are the pins off by one hole? again, pictures....will make it a bit easier... 
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Posted: 11/15/2013 8:32:42 PM EST
[#6]
Quote HistoryOriginally Posted By Postal0311: It is a used HCS upper, and it may have happened in shipping. The rail is not in alignment with the upper or the barrel. The nut that holds it on was loose. Removing and reattaching the railed tube doesn't fix it, it ends up sitting right back there. I worry that the upper or barrel nut might be damaged. Anyone have any suggestions? Strip it all the way down and let's have a look-see. You've built uppers before, right? |
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Posted: 11/15/2013 8:42:52 PM EST
[Last Edit: Postal0311]
[#7]
-Sigh- I hand tightened the nut and it wont come back apart. I don't have a strap wrench either.
Got it: 
Update: Tried installing the rail with the pins swapped, or omitting one on each side. The amount of cant changed, but was not eliminated. Also the flash hider is slightly canted. |
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Posted: 11/15/2013 9:28:54 PM EST
[Last Edit: JohnStoner]
[#8]
Interested in this one, that is nuts.
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Posted: 11/15/2013 9:40:09 PM EST
[#9]
Quote HistoryOriginally Posted By Postal0311: -Sigh- I hand tightened the nut and it wont come back apart. I don't have a strap wrench either. Don't you hate that? You nonchalantly hand tighten something and then can't budge it loose to save your life. WTF!!!!
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Posted: 11/15/2013 10:04:44 PM EST
[#10]
Quote HistoryOriginally Posted By GreenSwamperin:
Don't you hate that? You nonchalantly hand tighten something and then can't budge it loose to save your life. WTF!!!!
Quote HistoryOriginally Posted By GreenSwamperin:
Originally Posted By Postal0311:
-Sigh- I hand tightened the nut and it wont come back apart. I don't have a strap wrench either. Don't you hate that? You nonchalantly hand tighten something and then can't budge it loose to save your life. WTF!!!!
Oh how I've been there. My PRi Gen III's collar. I hand tightened it just to mock it up and couldn't break it loose with two sets of hands on the rifle. |
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Posted: 11/16/2013 7:18:23 AM EST
[#11]
Quote HistoryOriginally Posted By Postal0311: -Sigh- I hand tightened the nut and it wont come back apart. I don't have a strap wrench either. Got it: https://lh6.googleusercontent.com/-cxBaZ4lz-cs/UoboPQJ6FdI/AAAAAAAADY0/4cJjRNwWjkY/s576/2013-11-15%252022.24.33.jpg Update: Tried installing the rail with the pins swapped, or omitting one on each side. The amount of cant changed, but was not eliminated. Also the flash hider is slightly canted. $10 strap wrench at Lowes or Home Depot. Hand-tightening it won't let you get it tight and true like it needs to be. If it were mine, I'd strip it ALL the way down - barrel, gas tube, upper, rail, brake/collar and reassemble it. |
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MI, USA
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Posted: 11/16/2013 9:04:54 AM EST
[#12]
Anybody know where to get the proper barrel for the mod H?
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Posted: 11/16/2013 9:19:16 AM EST
[#13]
Quote HistoryOriginally Posted By _rory_:
Anybody know where to get the proper barrel for the mod H? Adco has White Oak Barrels in stock in both 16" and 18". |
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MI, USA
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Posted: 11/16/2013 9:22:18 AM EST
[Last Edit: _rory_]
[#14]
Quote HistoryOriginally Posted By Munzy:
Adco has White Oak Barrels in stock in both 16" and 18". Quote HistoryOriginally Posted By Munzy:
Originally Posted By _rory_:
Anybody know where to get the proper barrel for the mod H? Adco has White Oak Barrels in stock in both 16" and 18". It doesn't look like those have the shoulder for the ops inc collar. Do they? |
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OR, USA
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Posted: 11/16/2013 3:33:25 PM EST
[#15]
I scored a Leupold 3.5-10x. It's got the Primer Reticle FFP conversion and the Gen 2 mil-dot reticle. I like the reticle a lot, it looks good through the whole magnification range, FFP isn't a big deal in a 10x scope but it's still nice to have.
Now the question is what to put it on. I'm thinking a Mod H upper, I'm going to see how well it works on my SR-15 first. 
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AZ, USA
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Posted: 11/16/2013 3:51:18 PM EST
[#16]
Quote HistoryOriginally Posted By Mblades:
I scored a Leupold 3.5-10x. It's got the Primer Reticle FFP conversion and the Gen 2 mil-dot reticle. I like the reticle a lot, it looks good through the whole magnification range, FFP isn't a big deal in a 10x scope but it's still nice to have. Now the question is what to put it on. I'm thinking a Mod H upper, I'm going to see how well it works on my SR-15 first. http://i723.photobucket.com/albums/ww232/Kyle_OA/B3403FDC-6CA5-422D-9D34-EF4989A874FA-1807-000001D59D11FEE4_zps83f87eff.jpg http://i723.photobucket.com/albums/ww232/Kyle_OA/54ea07f6-ecfe-4aed-9012-9bd7bb99f1b8_zps6de8f936.jpg Nice score put it on a Mod Holland for sure 
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Posted: 11/16/2013 5:31:09 PM EST
[#17]
Quote HistoryOriginally Posted By Mblades:
I scored a Leupold 3.5-10x. It's got the Primer Reticle FFP conversion and the Gen 2 mil-dot reticle. I like the reticle a lot, it looks good through the whole magnification range, FFP isn't a big deal in a 10x scope but it's still nice to have. Now the question is what to put it on. I'm thinking a Mod H upper, I'm going to see how well it works on my SR-15 first. http://i723.photobucket.com/albums/ww232/Kyle_OA/B3403FDC-6CA5-422D-9D34-EF4989A874FA-1807-000001D59D11FEE4_zps83f87eff.jpg http://i723.photobucket.com/albums/ww232/Kyle_OA/54ea07f6-ecfe-4aed-9012-9bd7bb99f1b8_zps6de8f936.jpg Good score! |
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MI, USA
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Posted: 11/16/2013 5:45:40 PM EST
[Last Edit: _rory_]
[#18]
So would a mod h take a recce contour barrel? I'm struggling to find the correct one, I found one by superior barrels that I think is correct.
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Posted: 11/16/2013 6:12:42 PM EST
[Last Edit: RTUtah]
[#19]
Combat accuracy at roughly 150 yards using plain old 55-grain FMJ. Nothing impressive, just a bit of fun while sighting in. Next trip out, I'll be stretching out to about 600 yards. Oh, and I love this damn rifle.
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Posted: 11/16/2013 6:31:22 PM EST
[Last Edit: gunnut003]
[#20]
Quote HistoryOriginally Posted By _rory_:
So would a mod h take a recce contour barrel? I'm struggling to find the correct one, I found one by superior barrels that I think is correct. This is the correct profile...with the OPS INC self. Made by Compass Lake Engineering on a Douglas blank. 
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MI, USA
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Posted: 11/16/2013 6:32:57 PM EST
[#21]
Quote HistoryOriginally Posted By gunnut003:
This is the correct profile...with the OPS INC self. http://imageshack.us/a/img191/6739/o45q.jpg Quote HistoryOriginally Posted By gunnut003:
Originally Posted By _rory_:
So would a mod h take a recce contour barrel? I'm struggling to find the correct one, I found one by superior barrels that I think is correct. This is the correct profile...with the OPS INC self. http://imageshack.us/a/img191/6739/o45q.jpg Who makes that barrel? I found out the superior barrels recce one is contoured for the ops inc. Helps when ya look at pictures haha. |
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OR, USA
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Posted: 11/16/2013 6:46:05 PM EST
[#22]
Quote HistoryOriginally Posted By _rory_:
Who makes that barrel? I found out the superior barrels recce one is contoured for the ops inc. Helps when ya look at pictures haha. Quote HistoryOriginally Posted By _rory_:
Originally Posted By gunnut003:
Originally Posted By _rory_:
So would a mod h take a recce contour barrel? I'm struggling to find the correct one, I found one by superior barrels that I think is correct. This is the correct profile...with the OPS INC self. http://imageshack.us/a/img191/6739/o45q.jpg Who makes that barrel? I found out the superior barrels recce one is contoured for the ops inc. Helps when ya look at pictures haha. If I were putting together a Mod H, I'd give ADCO a call, they have plenty of experience with fitting Ops collars, do great work, and are great to deal with. If you look on PRIs website they show barrels with the correct profile too, though they are out of stock. |
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VA, USA
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Posted: 11/16/2013 7:53:35 PM EST
[#23]
I have 1 first born child available, will trade for 12th Model...
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Posted: 11/16/2013 8:12:03 PM EST
[#24]
Quote HistoryOriginally Posted By lancecriminal86:
I have 1 first born child available, will trade for 12th Model... That's about how I feel. The money isn't a problem. I don't think the form 3 will be approved before the proposed changes take effect... if they take effect. So it's this horrible game of wait and see. |
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Posted: 11/16/2013 8:40:33 PM EST
[#25]
Quote HistoryOriginally Posted By lancecriminal86:
I have 1 first born child available, will trade for 12th Model... I'd trade you but I've already got two kiddies of my own........ 
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TX, USA
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Posted: 11/16/2013 9:27:00 PM EST
[Last Edit: m4socom]
[#26]
Quote HistoryOriginally Posted By _rory_:
Anybody know where to get the proper barrel for the mod H? Quote HistoryOriginally Posted By _rory_:
Anybody know where to get the proper barrel for the mod H? Originally Posted By _rory_:
So would a mod h take a recce contour barrel? I'm struggling to find the correct one, I found one by superior barrels that I think is correct. Call PRI. That's where I got mine. Douglas Barrel, 16" with Ops collar and muzzle break..... Website showed backordered but put in a phone call and they had plenty in stock. 
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MI, USA
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Posted: 11/16/2013 9:38:57 PM EST
[#27]
Quote HistoryOriginally Posted By Mblades:
If I were putting together a Mod H, I'd give ADCO a call, they have plenty of experience with fitting Ops collars, do great work, and are great to deal with. If you look on PRIs website they show barrels with the correct profile too, though they are out of stock. Quote HistoryOriginally Posted By Mblades:
Originally Posted By _rory_:
Originally Posted By gunnut003:
Originally Posted By _rory_:
So would a mod h take a recce contour barrel? I'm struggling to find the correct one, I found one by superior barrels that I think is correct. This is the correct profile...with the OPS INC self. http://imageshack.us/a/img191/6739/o45q.jpg Who makes that barrel? I found out the superior barrels recce one is contoured for the ops inc. Helps when ya look at pictures haha. If I were putting together a Mod H, I'd give ADCO a call, they have plenty of experience with fitting Ops collars, do great work, and are great to deal with. If you look on PRIs website they show barrels with the correct profile too, though they are out of stock. I saw them, id just like to get the barrel asap. I have the collar and everything, just need the barrel. |
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MI, USA
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Posted: 11/16/2013 10:00:54 PM EST
[#28]
Quote HistoryOriginally Posted By m4socom:
Call PRI. That's where I got mine. Douglas Barrel, 16" with Ops collar and muzzle break..... Website showed backordered but put in a phone call and they had plenty in stock. http://parahue.smugmug.com/photos/i-z2qvcjp/0/L/i-z2qvcjp-L.jpg Quote HistoryOriginally Posted By m4socom:
Originally Posted By _rory_:
Anybody know where to get the proper barrel for the mod H? Originally Posted By _rory_:
So would a mod h take a recce contour barrel? I'm struggling to find the correct one, I found one by superior barrels that I think is correct. Call PRI. That's where I got mine. Douglas Barrel, 16" with Ops collar and muzzle break..... Website showed backordered but put in a phone call and they had plenty in stock. http://parahue.smugmug.com/photos/i-z2qvcjp/0/L/i-z2qvcjp-L.jpg Definitely will do that. |
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OR, USA
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Posted: 11/16/2013 10:07:32 PM EST
[#29]
Quote HistoryOriginally Posted By m4socom:
Call PRI. That's where I got mine. Douglas Barrel, 16" with Ops collar and muzzle break..... Website showed backordered but put in a phone call and they had plenty in stock. http://parahue.smugmug.com/photos/i-z2qvcjp/0/L/i-z2qvcjp-L.jpg Quote HistoryOriginally Posted By m4socom:
Originally Posted By _rory_:
Anybody know where to get the proper barrel for the mod H? Originally Posted By _rory_:
So would a mod h take a recce contour barrel? I'm struggling to find the correct one, I found one by superior barrels that I think is correct. Call PRI. That's where I got mine. Douglas Barrel, 16" with Ops collar and muzzle break..... Website showed backordered but put in a phone call and they had plenty in stock. http://parahue.smugmug.com/photos/i-z2qvcjp/0/L/i-z2qvcjp-L.jpg That thing is sweet! |
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OR, USA
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Posted: 11/16/2013 10:09:37 PM EST
[Last Edit: Mblades]
[#30]
Quote HistoryAnybody know where to get the proper barrel for the mod H? I know when the specs for the mod h got posted it said mid length SS barrel and gave Noveske as example of 1 of the barrels in the pictured rifles. Good chance that Douglas barrel from PRI is another example of "the proper barrel" you are looking for. |
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Posted: 11/16/2013 11:15:10 PM EST
[#31]
Quote HistoryOriginally Posted By m4socom: Call PRI. That's where I got mine. Douglas Barrel, 16" with Ops collar and muzzle break..... Website showed backordered but put in a phone call and they had plenty in stock. http://parahue.smugmug.com/photos/i-z2qvcjp/0/L/i-z2qvcjp-L.jpg Quote HistoryOriginally Posted By m4socom: Originally Posted By _rory_: Anybody know where to get the proper barrel for the mod H? Originally Posted By _rory_: So would a mod h take a recce contour barrel? I'm struggling to find the correct one, I found one by superior barrels that I think is correct. Call PRI. That's where I got mine. Douglas Barrel, 16" with Ops collar and muzzle break..... Website showed backordered but put in a phone call and they had plenty in stock. http://parahue.smugmug.com/photos/i-z2qvcjp/0/L/i-z2qvcjp-L.jpg Christ on a crutch, that thing is shit-hot. |
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USA
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Posted: 11/17/2013 2:23:37 AM EST
[Last Edit: weirdybeard]
[#32]
Just picked this up. Wondering as others on authenticating. I dont see anything that makes me think its a fake, but others have said there's markings inside the rail. I thought it was on the heat shield of the m4 style ras rails. Any info would be greatly appreciated.
http://i1234.photobucket.com/albums/ff407/brandiwatt/IMG_0784.jpg |
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Posted: 11/17/2013 7:46:10 AM EST
[#33]
In an earlier post I mentioned having the KAC markings on the inside of my rail. I should have clarified that it was an M5 RAS rail which of course is different. I didn't think much of it until a member asked me to send him a pic of the markings. They are stamped in the heat sheild. I assembled that rifle a few years back and remembered that the only markings on the rail were on the inside. I didn't think to mention that they were stamped in the heat shield mostly because it had been so long since I'd put that rail on.
My intention was to maybe provide another way to identify suspect KAC rails. Sorry if this has caused any confusion. This is a pic of the inside of my KAC M5 RAS..... 
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NY, USA
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Posted: 11/17/2013 11:19:53 AM EST
[#34]
Does anybody have any further information or resources detailing the "Mod Holland"?
When were they built, how many, and for whom? I want a mk12 clone, but not sure on variant. I like the idea of a 16" vs the 18" and there are way less parts to buy. My real dilemma - block II m4 upper, Mod H or mod 1 upper? |
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USA
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Posted: 11/17/2013 11:54:50 AM EST
[#35]
Quote HistoryOriginally Posted By weirdybeard:
Just picked this up. Wondering as others on authenticating. I dont see anything that makes me think its a fake, but others have said there's markings inside the rail. I thought it was on the heat shield of the m4 style ras rails. Any info would be greatly appreciated. <a href="http://s1234.photobucket.com/user/brandiwatt/media/IMG_0784.jpg.html" target="_blank">http://i1234.photobucket.com/albums/ff407/brandiwatt/IMG_0784.jpg</a> There's nothing about what I see pictured that leads me to believe the rail is not authentic. No markings inside the rail--how would you see them since you can't separate the two halves? You can clearly see the weld spots near the barrel nut and the markings look exactly like mine which was purchased from Operation Parts. |
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OR, USA
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Posted: 11/17/2013 12:24:32 PM EST
[#36]
Quote HistoryOriginally Posted By blackghost:
Does anybody have any further information or resources detailing the "Mod Holland"? When were they built, how many, and for whom? I want a mk12 clone, but not sure on variant. I like the idea of a 16" vs the 18" and there are way less parts to buy. My real dilemma - block II m4 upper, Mod H or mod 1 upper? I think page 126 is where Glass1 first posted the pics and info. I don't know that there is much, if any, info available past that... anywhere. As far as block II vs mod h vs mod 1, it depends on what you want to use it for. The mod h and mod 1 will be more accurate and the specs call for a 2.5-8 or 3.5-10x scope, with the mod h you also have the advantage of the Larue mount so if you wanted to switch out a 1x optic it would be no problem. The block II would be cheaper, easier and not nearly as cool. |
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NY, USA
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Posted: 11/17/2013 6:34:52 PM EST
[#37]
Thanks for the info. Glass1's pics from those pages are all gone, though definitely a lot of great build information.
Did anybody save those pictures and maybe want to rehost them? Last question, was it ever mentioned which Special Forces group had requested the "Mod Holland" changes? Just out of curiosity. |
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OR, USA
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Posted: 11/17/2013 6:46:06 PM EST
[Last Edit: Mblades]
[#38]
Quote HistoryOriginally Posted By blackghost:
Thanks for the info. Glass1's pics from those pages are all gone, though definitely a lot of great build information. Did anybody save those pictures and maybe want to rehost them? Last question, was it ever mentioned which Special Forces group had requested the "Mod Holland" changes? Just out of curiosity. They got reposted somewhere, just do a google image search. I think(don't quote me on this) they were for 5th SFG but I don't know if that has been confirmed, it would make sense seeing how the mod h started life as a Mod 0 with gen I PRI tube. I think most of the pics we have of early Mod 0's are from Army SF. Edit: the photos are in the first post, all the way back on page 1 |
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Posted: 11/17/2013 6:46:44 PM EST
[Last Edit: RTUtah]
[#39]
Quote HistoryOriginally Posted By blackghost: Thanks for the info. Glass1's pics from those pages are all gone, though definitely a lot of great build information. Did anybody save those pictures and maybe want to rehost them? Last question, was it ever mentioned which Special Forces group had requested the "Mod Holland" changes? Just out of curiosity. I've got all the ModH photos saved so I'll re-host them. And it is my assumption that the Hollands were tooled up for a 5th Group team. ETA: ModH photos are still showing up in my OP, and there's also a build list. |
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TX, USA
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Posted: 11/17/2013 6:52:05 PM EST
[#40]
Thanks for the compliments!
Quote HistoryOriginally Posted By blackghost:
Does anybody have any further information or resources detailing the "Mod Holland"? When were they built, how many, and for whom? I want a mk12 clone, but not sure on variant. I like the idea of a 16" vs the 18" and there are way less parts to buy. My real dilemma - block II m4 upper, Mod H or mod 1 upper? I still struggle with the same thing. I have only shot 60 rounds through my mod H. While the groups may not be as tight, I have no problem getting hits all day long at 600m with my block II / nf 2.5-10x24 setup which I have a suppressor for as well so the mod H does a lot of sitting 
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OR, USA
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Posted: 11/17/2013 7:11:22 PM EST
[#41]
Quote HistoryOriginally Posted By m4socom:
Thanks for the compliments! I still struggle with the same thing. I have only shot 60 rounds through my mod H. While the groups may not be as tight, I have no problem getting hits all day long at 600m with my block II / nf 2.5-10x24 setup which I have a suppressor for as well so the mod H does a lot of sitting Quote HistoryOriginally Posted By m4socom:
Thanks for the compliments! Originally Posted By blackghost:
Does anybody have any further information or resources detailing the "Mod Holland"? When were they built, how many, and for whom? I want a mk12 clone, but not sure on variant. I like the idea of a 16" vs the 18" and there are way less parts to buy. My real dilemma - block II m4 upper, Mod H or mod 1 upper? I still struggle with the same thing. I have only shot 60 rounds through my mod H. While the groups may not be as tight, I have no problem getting hits all day long at 600m with my block II / nf 2.5-10x24 setup which I have a suppressor for as well so the mod H does a lot of sitting This is my dilemma also. I haven't shot my SR-15 with a good optic yet to see what kind of groups it's capable of but everything thus far has been promising. If it shoots in the 1 MOA range then it's going to be hard for me to justify spending ~$1000 on an upper with only marginally better performance. |
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Posted: 11/17/2013 7:29:40 PM EST
[#42]
Reckon it comes down to whether or not you're a clone guy.
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OR, USA
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Posted: 11/17/2013 8:05:29 PM EST
[#43]
Quote HistoryOriginally Posted By RTUtah:
Reckon it comes down to whether or not you're a clone guy. Yes and No. I wouldn't build one for the sake of building it but if it's going to serve a purpose, then I think building a clone is fun. I wanted a precision scoped AR, I found this thread and fell in love with the Mod 0. I could have built a cheaper and maybe more capable precision AR but I was intrigued by the Mk 12's lineage and it was fun tracking down all the parts. In the end, I had a rifle that filled the precision scoped AR role I was looking for. 
My other thought is to build a Mod 0 in 6.5 Grendel, while not an accurate clone it would fill a different role and give me some added range. |
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Posted: 11/17/2013 9:08:25 PM EST
[#44]
Quote HistoryOriginally Posted By _rory_:
It doesn't look like those have the shoulder for the ops inc collar. Do they? Quote HistoryOriginally Posted By _rory_:
Originally Posted By Munzy:
Originally Posted By _rory_:
Anybody know where to get the proper barrel for the mod H? Adco has White Oak Barrels in stock in both 16" and 18". It doesn't look like those have the shoulder for the ops inc collar. Do they? The White oak spr barrels have the shoulder, at least my 18 does. |
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Posted: 11/17/2013 9:10:17 PM EST
[#45]
Quote HistoryOriginally Posted By Mblades: Yes and No. I wouldn't build one for the sake of building it but if it's going to serve a purpose, then I think building a clone is fun. I wanted a precision scoped AR, I found this thread and fell in love with the Mod 0. I could have built a cheaper and maybe more capable precision AR but I was intrigued by the Mk 12's lineage and it was fun tracking down all the parts. In the end, I had a rifle that filled the precision scoped AR role I was looking for. http://i723.photobucket.com/albums/ww232/Kyle_OA/IMG_1212.jpg My other thought is to build a Mod 0 in 6.5 Grendel, while not an accurate clone it would fill a different role and give me some added range. Quote HistoryOriginally Posted By Mblades: Originally Posted By RTUtah: Reckon it comes down to whether or not you're a clone guy. Yes and No. I wouldn't build one for the sake of building it but if it's going to serve a purpose, then I think building a clone is fun. I wanted a precision scoped AR, I found this thread and fell in love with the Mod 0. I could have built a cheaper and maybe more capable precision AR but I was intrigued by the Mk 12's lineage and it was fun tracking down all the parts. In the end, I had a rifle that filled the precision scoped AR role I was looking for. http://i723.photobucket.com/albums/ww232/Kyle_OA/IMG_1212.jpg My other thought is to build a Mod 0 in 6.5 Grendel, while not an accurate clone it would fill a different role and give me some added range. That thing is just glorious. Look at it for fuck's sake.   |
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Posted: 11/17/2013 9:10:24 PM EST
[#46]
Quote HistoryOriginally Posted By KOBK:
work in progress - roughing it out, still more to do, but getting there I wanted to say thanks to Augee for giving me the idea to put this post together. I have always had an interest in the early SPR/MK12 Mod0 and been fortunate enough to accumulate some of the more difficult to find parts. I thought it might be useful to show some of the similarities and differences in the various generations of Precision Reflex Inc. products used on the rifle and give a brief description of the product. TO BEGIN The first picture shows everything together, including a MK12 Mod1 upper. The Mod1 uses the KAC M4 Match Free Floating RAS Forearm. It was included to show the difference between it and the PRI products used on the SPR/Mod0. Pictured: PRI Gen1, PRI Gen2, PRI Gen3, Gen1 and current PRI flip up front sight, ARMS #38 SPR MOD rail, ADCO built MK12 Mod1 <a href="http://s196.photobucket.com/user/nashvillito/media/espr1_zps0f2b66dd.jpg.html" target="_blank">http://i196.photobucket.com/albums/aa253/nashvillito/espr1_zps0f2b66dd.jpg</a> GENERATION I, GENERATION II and GENERATION III Three generations of PRI Carbon Fiber Free Floating Forend are pictured below, each with their respective flip up front sight. The Gen1 and Gen2 are a similar in appearance. Each using a standard size barrel nut, the same locking handguard collar and a straight profile free floating carbon fiber tube. The Gen3 is noticable than the first two generations, due to its use of a different, redesigned larger barrel nut and retaining collar. Some of the differences between the individual generations will be noted a little later. PRI Gen1 (top), PRI Gen2 (middle), PRI Gen3 (bottom) <a href="http://s196.photobucket.com/user/nashvillito/media/espr2_zpsf2c4900c.jpg.html" target="_blank">http://i196.photobucket.com/albums/aa253/nashvillito/espr2_zpsf2c4900c.jpg</a> GENERATION I and GENERATION II The Gen1 and Gen2 hand guards both use the same style of threaded barrel nut and hand guard retaining nut. One major difference between the hand guards is the diameter of the carbon fiber tube. The Gen1 tube roughly measures 2-3/16" while the Gen2 tube measure in at 2". The sides of the Gen2 tube has additional holes to accommodate longer rails or to change the position of the side mounting rails while the Gen1 tube is lacking this. The Gen1 has an additional set of holes at the 5and 7 o-clock position at the rear of the tube while the Gen2 does not. the Gen1 hand guard is lacking a heatsheild while the Gen2 has it. Below are good examples to show the differences in not only the Gen1 and Gen2 but also two versions of the ARMS #38 rail. Both are marked "A.R.M.S. #38 SPR MOD Swan Sleeve Cal 5.56" but it can be seen in the picture the location of the logo is slightly different and most notable the top of the rails spacing. PRI Gen1 (top) and PRI Gen2 (bottom) <a href="http://s196.photobucket.com/user/nashvillito/media/espr5_zpsbf0caf56.jpg.html" target="_blank">http://i196.photobucket.com/albums/aa253/nashvillito/espr5_zpsbf0caf56.jpg</a> <a href="http://s196.photobucket.com/user/nashvillito/media/espr4_zpse5d30fc1.jpg.html" target="_blank">http://i196.photobucket.com/albums/aa253/nashvillito/espr4_zpse5d30fc1.jpg</a> GENERATION I The next set of photos show the Gen1 hand guard disassembled into its major components. Note the hole toward the bottom rear and the two piece top mount for the ARMs #38 Rail. PRI Gen1 parts - side <a href="http://s196.photobucket.com/user/nashvillito/media/espr6_zps9bb9b314.jpg.html" target="_blank">http://i196.photobucket.com/albums/aa253/nashvillito/espr6_zps9bb9b314.jpg</a> top veiw not only shows the attachements for the arms rail but the lack of heatsheilds can be seen through the holes. PRI Gen1 parts - top <a href="http://s196.photobucket.com/user/nashvillito/media/espr7_zps1bb97a12.jpg.html" target="_blank">http://i196.photobucket.com/albums/aa253/nashvillito/espr7_zps1bb97a12.jpg</a> While looking through the archives, I found a post from a member back in 2004. He had a Gen1 that came from the first run of the hand guard, the carbon fiber tube was oversize by .030". This required the modification of the ARMS #38 rail to fit the larger radius of the tube. I thought that was kind of interesting, I had never heard that before. An early run PRI Gen1, slightly oversize with ARMS rail cut to fit the larger radius (for comparison, normal rail top and fit rail bottom) <a href="http://s196.photobucket.com/user/nashvillito/media/espr8_zpsc8ba31ed.jpg.html" target="_blank">http://i196.photobucket.com/albums/aa253/nashvillito/espr8_zpsc8ba31ed.jpg</a> GENERATION II A Gen2 rail pictured below. same barrel nut as gen1. the heatsheild can be seen, rail mounting holes running along the side, and a 8.5" top attachment rail with steel bushings used to attach the ARMS #38 rail to the carbon fiber tube. PRI Gen2 <a href="http://s196.photobucket.com/user/nashvillito/media/espr9_zps3e301c21.jpg.html" target="_blank">http://i196.photobucket.com/albums/aa253/nashvillito/espr9_zps3e301c21.jpg</a> GERERATION I and GENERATION III Following set of pictures show the comparison between the Gen1 and Gen3 hand guard. since the gen1and gen2 are similar, I will just show the differences in the gen1 and gen3. The differences are very noticeable, most notably in the barrel nut area. Also the diameter of the gen3 is about 3/16 less than that of the Gen1. PRI Gen1 and PRI Gen3 - side <a href="http://s196.photobucket.com/user/nashvillito/media/espr10_zps6d531f90.jpg.html" target="_blank">http://i196.photobucket.com/albums/aa253/nashvillito/espr10_zps6d531f90.jpg</a> note the differences in how the arms #38 rail attaches. The gen 1 uses two smaller rails(3" front, 2"rear) while the gen3 uses an 8.5 rail, the gen2 also uses the same styleas the gen3 PRI Gen1 and PRI Gen3 - top <a href="http://s196.photobucket.com/user/nashvillito/media/espr11_zpsa27d5b3c.jpg.html" target="_blank">http://i196.photobucket.com/albums/aa253/nashvillito/espr11_zpsa27d5b3c.jpg</a> The final picture is the handguards disassembled to show the differences in their construction and the way they mount to the receiver. PRI Gen1 and PRI Gen3 - parts <a href="http://s196.photobucket.com/user/nashvillito/media/esp115_zps66108762.jpg.html" target="_blank">http://i196.photobucket.com/albums/aa253/nashvillito/esp115_zps66108762.jpg</a> ARMS #38 SPR MOD SWAN SLEEVE Atlantic Research Marketing Systems made at least three versions of the ARMS #38 SPR MOD rail for the Gen1/2 forearm. Two of the three versions of the pictured, missing version I have read is the peq2 version. similar to the end similar to the peq 2-3 ARMS #38 SPR MOD Rail - top <a href="http://s196.photobucket.com/user/nashvillito/media/espr12_zps1bfb8d5e.jpg.html" target="_blank">http://i196.photobucket.com/albums/aa253/nashvillito/espr12_zps1bfb8d5e.jpg</a> two versions of the swan sleeve.ARMS #38 peq2-3 rail for the PRI Gen3 and the ARMS #38 spr mod rail for the PRI Gen1/2. gen3's larger barrel nut design necessary for the steped notch. arms #38 peq 2-3 (top) and arms #38 spr mod (bottom) <a href="http://s196.photobucket.com/user/nashvillito/media/espr13_zpsf6afd970.jpg.html" target="_blank">http://i196.photobucket.com/albums/aa253/nashvillito/espr13_zpsf6afd970.jpg</a> FLIP UP FRONT SIGHT BASE two versions of the pri sight pictured below used with the spr/mod0 . The early front sight with an elevation wheeled front sight found on the spr. current version used on the mk12 mod0 . similaiar in design, slightly different profile.both use four set screw to attach the sight to the barrel, requirng flats needing to be milled in to the barrel. noted elsewhere the gen1 violated a french patent, leading to the redesign Current flip up front sight base (top) and Gen1 "wheeled" front sight base (bottom) <a href="http://s196.photobucket.com/user/nashvillito/media/espr14_zps732411d8.jpg.html" target="_blank">http://i196.photobucket.com/albums/aa253/nashvillito/espr14_zps732411d8.jpg</a> note the difference in addresses. posted earlier in the thread there is an early version of the current sight. it has the same address as the gen1. <a href="http://s196.photobucket.com/user/nashvillito/media/espr15_zpsb19b3d24.jpg.html" target="_blank">http://i196.photobucket.com/albums/aa253/nashvillito/espr15_zpsb19b3d24.jpg</a> Final set of pictures show the sights open and closed side veiw -closed <a href="http://s196.photobucket.com/user/nashvillito/media/espr16_zpsb305ddd7.jpg.html" target="_blank">http://i196.photobucket.com/albums/aa253/nashvillito/espr16_zpsb305ddd7.jpg</a> side view - open <a href="http://s196.photobucket.com/user/nashvillito/media/espr17_zps942c0a7d.jpg.html" target="_blank">http://i196.photobucket.com/albums/aa253/nashvillito/espr17_zps942c0a7d.jpg</a> Thanks for looking and hope this helps Great post, thank you. |
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Posted: 11/17/2013 9:50:53 PM EST
[#47]
Quote HistoryOriginally Posted By AHSGA: Great post, thank you. Quote HistoryOriginally Posted By AHSGA: Originally Posted By KOBK: <snip> Great post, thank you. KOBK's post was added to my OP along with Augee's in-depth comparison of the various ARMS Swan Sleeves. Now if I could just get somebody to do a similar post on all the different Leupold and NF optics, I'd say this thread would be about as complete as I could make it. |
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TX, USA
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Posted: 11/17/2013 10:02:47 PM EST
[#48]
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Posted: 11/17/2013 10:06:33 PM EST
[#49]
Quote HistoryOriginally Posted By blbean762:
Mk12 meet East Texas... Nice Pics! |
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