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Posted: 10/22/2003 10:35:02 PM EDT
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I have a pre-ban SPII AR-15 A2 barrel marked: C MP 5.56 Nato 1/7 Some sources say the whole thing is chrome lined, others say just the chamber. thank you. |
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I can't call myself an expert on more recent barrels, but on the early A1 series, "C" stood for Colt, and unless there was also a "B", or "chrome lined" stamped on it, it wasn't. Easy test is to take a Q Tip w/instant blue and put it on the bright ring around the edge of the muzzle. If the bluing takes,and darkens the edge, it's not chrome lined. If it doesn't darken the ring, it is chromed.[:D] |
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I read that C stood fro chrome chamber, MP like you said (TOPCREST) for magna-particle, but that it is supposed to say chrome barrel for a bbl. I think I might trie that bluing test. Sounds like a plan, but I am sure I can see a difference between a chrome lining and rhe rest of the barrel, but it is unlike a Bushmaster bbl where the chrome goes pase the bore and onto the crown itself ( a little). This appears to just be the bore itself. |
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