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[ARCHIVED THREAD] - AR bolt markings

Posted: 6/19/2005 1:57:11 PM EDT

I have two Colt-made ARs, one with the standard "MPC" etched on the bolt.

The second is marked "MPYC," with the "Y" underlined. Anyone know what this is?

Posted: 6/19/2005 3:04:12 PM EDT

[#1]

The "Y" is some type of date code designator, IIRC.

[ARCHIVED THREAD] - AR bolt markings

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