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Posted: 5/19/2009 7:16:26 PM EDT
How can I tell if my EA ar15 shoots 223 or .566?
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Quoted:
Your barrel will be marked 5.56. You can shoot 5.56 military or .223 Remington in it. If the barrel were marked .223 Remington, you could should not shoot 5.56 military in it. It can be done, but you will be exceeding SAAMI specs for the chamber. Not quite inviting disaster, but certainly not good policy. |
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Some one tell me if I'm wrong, but Essential Arms don't sell complete rifles. They sell everything but the barrel.
That said, some one had to put it together with an after market barrel. So you best bet is to look on the barrel. If it's not on there, I would check with the person you bought the rifle from. I wouldn't trust what stamped on the Lower receiver. PC-Tech |
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Quoted:
What does it say on the left side of the lower receiver? Then remove handguards and look at the barrel, might tell you more. What's marked on the lower is meaningless. It has NOTHING to do with what the barrel is chambered for. Most Colt Sporters are marked ".223" on the receivers, but I don't think any Colt is made with a SAMMI chamber. Many barrel makers/OEMs mark the chambering and twist rate of their barrels on top of the barrel forward of the FSB. Rock River uses a code that they put on top of the barrel just forward of the barrel nut (which makes it a pain to find and a pain to interpret). Check the barrel for these marks, and if they're absent, then check with whoever made the complete upper. |
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