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[ARCHIVED THREAD] - Colt Model R6600DH question

Posted: 5/26/2015 4:37:42 PM EDT

I noticed the receiver is marked .223
Is this truly a .223 or can I use 5.56 as well

Posted: 5/26/2015 4:44:33 PM EDT

[#1]

What is stamped on the barrel will determine what you can shoot. It should either have 5.56 NATO or .223 REM stamped on it.

Posted: 5/26/2015 5:07:16 PM EDT

[#2]

I never noticed the barrel stamp
5.56 gtg

[ARCHIVED THREAD] - Colt Model R6600DH question

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