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[ARCHIVED THREAD] - Request Help Deciphering Barrel Markings

Posted: 7/13/2003 9:03:23 AM EDT

I have an AR15 rifle upper with a barrel marked "C MP B". Using Biggerhammer.net, I believe it's a Colt barrel that has been "magnflux" tested, but I haven't determined what the "B" means. Can anyone help me out?

Posted: 7/13/2003 11:07:49 AM EDT

[#1]

'B' means bore is chrome lined.

[ARCHIVED THREAD] - Request Help Deciphering Barrel Markings

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