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Could You Have Stopped This? Vegas Shooting Analysis with Attorneys on Retainer

[ARCHIVED THREAD] - whats the difference.....

Posted: 3/13/2012 4:58:39 AM EDT

How can we distinguish between an Colt M4 & M4A1 ?

Posted: 3/13/2012 11:06:57 AM EDT

[#1]

The rollmark on the receiver is a dead giveaway.

Posted: 3/13/2012 12:13:49 PM EDT

[#2]

Quoted:
The rollmark on the receiver is a dead giveaway.

Factory Colt photos: select-fire (Property Marked, RO977) , 6920 (Standard, SOCOM) ................

[ARCHIVED THREAD] - whats the difference.....

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