Posted: 2/9/2002 10:20:17 AM EDT
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At my local gun shop, there's a COLT AR-15 Carbine for sale. The receiver is a pre-1994 SP serial #'s AR-15. I'm trying to determine if the uppper is original to the lower. The upper has the bayo lug and birdcage flash hider. The the barrel is marked: SS 5.56mm Any thoughts on this? Regards, OH58D |
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I have never heard of a Colt barrel marked "SS 5.56" though I could be wrong. I thought they were all marked something like: "CMP 1/7 5.56 NATO." I think all the AR15a2's had 1/7 twist barrels and the SP1's would be marked something like: "CMP Chrome(bore) 1/12" or something similar. My guess is this gun has an aftermarket barrel on it. This may or may not be a good thing. Try looking here First attempt was faulty. I wonder how that happened?  This attempt works. www.biggerhammer.net/ |
| Actually its pretty easy for Colts. If its a preban the barrel it will be marked either, C MP B, C MP C, C MP CHROME, C MP 1/7 NATO, C MP 1/9 NATO, you get the picture? The only difference will be post bans and very early SP-1's with the MP, or 12 marking. Those are almost impossible to find anyways. |