[Malsua]

Here is one for you, the same folks that make 5.56mm make the exact same cartridge and call it a 223 change the label and sell it civilian

Not quite true. That's a good way to get sued out of existence. 5.56 chambered rifles can shoot a .223, it's true. However a .223 chambered rifle is not designed to withstand that higher chamber pressures of a 5.56 and older or poorly designed .223 rifles could literally blow up in your face if you shoot a 5.56 through it.

[RetiredArmy]

I said I got it off the web from an ammo chat site. I did not say that I said it. Go tell him.

[omega4179]

Show me pics of any .223 rifle that blew up because of 5.56 not caused by a squib load in the barrel.