5.56 NATO vs .223 Remington
I've been recently hearing a lot of confusions that I want to be clear on. When I was at a gun store with a friend and holding an AR15, I said it's chambered in .223. My Marine buddy then say that it's also called 556, but correct me if I'm wrong. Is there a real difference between what the military uses and that NATO calls 5.56mm to that of the .223 which is by US measurements even though in the US military they still call it a 5.56mm instead of .223.
My question is what is the difference in when we have civilians with AR-15s chambered in .223 vs a military M16 chambered in 5.56mm
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Psalm 144:1
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