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Posted: 7/18/2003 5:18:13 PM EDT


Can anyone help me out with Colts markings on the M-4 uppers? I've obtained an M-4 upper, which supposedly is off a LEO rifle. It has a marking that appears to be a triangle or a modified A. The detacheable handle has a number 4 on the right side, preceded by a symbol that kind of looks like an A. Thanks!

Link Posted: 7/18/2003 7:32:42 PM EDT
Its probably a Diemco Upper.I belive they do contracts for Colt. Theyre Canadian I think. Jm03
Link Posted: 7/18/2003 8:16:27 PM EDT
Diemaco + Anchor Harvey [img]http://www.boomspeed.com/kisara/KisaraDiemaco.jpg[/img]
Link Posted: 7/19/2003 5:15:22 AM EDT
Kisara's pic is accurate. HOWEVER, if it just has the split A on it w/o either the Diemaco mark or "Colt" stamped next to it (which I have also seen) it's probably an aftermarket non Colt piece. Anchor Harvey has done raw forgings for everybody in the business, which is why Colt and Diemaco add their own markings to the forgings
Link Posted: 7/20/2003 4:08:00 PM EDT
Thank you very much for the information, I appreciated it very much. Thanks again, Tom
Link Posted: 7/20/2003 4:31:30 PM EDT
[Last Edit: 7/20/2003 7:17:37 PM EDT by bwilliams]
That would be Anchor-Harvey: [url]http://www.forgings.com/mad.htm[/url] Just like on my pre-ban Colt R6721DC/R6601: [img]http://members.cox.net/bwilliams/006.jpg[/img]
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