User Panel
User Panel
User Panel
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Posted: 4/4/2006 6:43:09 PM EDT
[#1]
I can't tell you for sure, but if it is not marked 556, don't shoot it, stick to 223. Someone else may be able to tell you more.
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Posted: 4/4/2006 6:53:30 PM EDT
[#2]
call Colt and ask them
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Posted: 4/4/2006 6:55:51 PM EDT
[#3]
Usually it's not recommended because of the tight chamber on the .223 and the higher pressure differences with the 5.56mm. It's not worth the chance of a KB.
5.56mm is fine to shoot .223 and 5.56mm through, but .223 should be .223 only. |
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Posted: 4/4/2006 7:35:19 PM EDT
[#4]
Ammo forum
 www.ar15.com/forums/forum.html?b=3&f=16 AR15.COM AMMO ORACLE www.ammo-oracle.com/ You'll get your questions answered there in the first two or three tacked posts.... |
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Posted: 4/4/2006 8:37:07 PM EDT
[#5]
Check the barrel markings. If it's the original Colt barrel it'll say C MP 5.56 NATO and some kind of twist rate (1/7, 1/9). I don't know of ANY original Colt ARs barrels that are not 5.56 chambered, no matter what the lower says.
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Posted: 4/4/2006 10:37:20 PM EDT
[#6]
Thank You, that is what it says. Makes me feel stupid. 
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