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Posted: 11/5/2015 8:42:05 AM EDT
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Can anyone provide insight on a complete Diemaco upper receiver assembly. M4 profile receiver, marked with stylized D and split A. Diemaco BCG, 16" M4 profile barrel with carbine gas system laser engraved (not stamped) CC MP 5.56 1 / 7.
I understand that the upper may have come into the US through Colt LEO contract? Anyone have any experience with these? Diemaco's C8SFW uses a 16" barrel with carbine gas system for their spec-ops guys (though not M4 profile), so I figure the gas port size would be spot on. |
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Can you post photographs?
LEO contracts is a possibility, as Colt has had Colt Canada augment their LE production before, hence quite a few "Made in Canada" carbines out there, most often 6920s, but I'm not sure I've ever seen that barrel marking before as you described it... Most of the Canada made barrels I've seen have had the standard Diemaco "stylized D." Does the barrel have a date code on it? ~Augee |
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Quoted:
Can anyone provide insight on a complete Diemaco upper receiver assembly. M4 profile receiver, marked with stylized D and split A. Diemaco BCG, 16" M4 profile barrel with carbine gas system laser engraved (not stamped) CC MP 5.56 1 / 7. I understand that the upper may have come into the US through Colt LEO contract? Anyone have any experience with these? Diemaco's C8SFW uses a 16" barrel with carbine gas system for their spec-ops guys (though not M4 profile), so I figure the gas port size would be spot on. That's the most likely scenario. That's the only way I've ever heard of CC/Diemaco parts successfully getting here into civilian hands, as they won't import them to American civilians even though they can import American Colt parts.  
Assholes. Anywho, there was a distributor here (I want to say a year or 2 ago) who received CC LEO trade-in's. That's the only way I've heard of these uppers actually getting to our soil. |
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O.K., cool. I haven't bought it yet. Guy wants $500 in trade for it. I assume this is a good buy? Round count is obviously very low, shows some handling wear. It is complete with carry handle. If it is something you want I would say so. Assuming CC stands for Colt Canada you should expect some good accuracy from that barrel, Colt Canada/Diemaco barrels are always touted for their accuracy. I have a KAC SR-15, their early barrels were made on contract by Colt Canada/Diemaco and many of those mine included shoot really well. If you don't like it I doubt you are taking much if any financial risk buying it at $500, it's rare enough I feel like someone here would always want it for $500. |
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The barrel markings are the only thing that would give me pause here.
I've never seen laser-engraved barrel markings associated with Colt, Colt Canada, or Diemaco, though the "CC" sounds correct: 
http://www.ar15.com/forums/t_3_118/664759_Colt_Canada_Gen_II_IUR.html At the same time, I am not an expert in Colt Canada or Diemaco except insofar as they are related to U.S. service weapons. Honestly what I would do is either request, or try to get photographs, and I would also post about it in the Diemaco/Colt Canada thread in the A2 sub-forum, there are a couple of Canadian guys in there, and that's really the locus of the folks with the most extensive knowledge of Colt Canada and Diemaco specifically. ~Augee |
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That's a colt canada civi barrel, they're selling them now here in Canada, direct to the public, either 20 or 15.7 bbls.
The upper reciever is either military or police contract M4, should be stamped at the front with the feed ramps inside. If it were Canadian issue it would have 14 slots on the flattop and be weaver spec, that's a piccatinny spec upper. The bolt is standard diemaco and marked MPD with the Devtek. Its a find. Not sure why the barrel is mated to the upper receiver, as all the civi uppers with the CC forge codes have a CC marked upper receiver. I've built quite few of these up north, and this looks like its a buildup. |
| I bought a cc lower and iur 15.7 upper and it says colt Canada on the upper but it has a square forge mark and a nato stamp on it. Were the complete rifles and uppers different orders that didn't go through or something? Also do you know anyone who can switch the barrel on the monolithic upper? I'm almost certain I need proprietary tools or a colt wizard. |
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Quoted:
I bought a cc lower and iur 15.7 upper and it says colt Canada on the upper but it has a square forge mark and a nato stamp on it. Were the complete rifles and uppers different orders that didn't go through or something? Also do you know anyone who can switch the barrel on the monolithic upper? I'm almost certain I need proprietary tools or a colt wizard. I know the American Colt monolithic (6940) uses a funky barrel nut and it's proprietary barrel nut wrench. (I can't even imagine how much a barrel swap would suck with a monolithic upper) I've never seen the wrench, but if it's the same one used on your CC upper (maybe call Colt and ask), you might have better luck tracking one down in the U.S. although it may be hard to track down in either country. This right here is the sole reason I've never been Interested in the 6940, but still wish you the best of luck, eh?
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