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AR15.COM
2/23/2012 6:19:08 PM EDT
Have a Colt model Sporter Match H Bar S.N. MN0233xx and Colt Model AR15 A2 Govt Carbine S.N. GC0099xx both are marked caliber 223 will these firearms shoot 5.56mm
Thanks in advance
Mark
2/23/2012 6:35:32 PM EDT
[#1]
If they have factory barrels, then yes.  All Colt 223-marked rifles (with one or two rare exceptions) are chambered for 5.56.  If you check the barrels for markings, they should be stamped 5.56 NATO.

The 223 marking on the receivers is more a matter of tradition than anything else.
2/23/2012 6:52:49 PM EDT
[#2]
Quoted:
If they have factory barrels, then yes.  All Colt 223-marked rifles (with one or two rare exceptions) are chambered for 5.56.  If you check the barrels for markings, they should be stamped 5.56 NATO.

The 223 marking on the receivers is more a matter of tradition than anything else.




Good To Go
Thanks