Quote Originally Posted by thamm View Post
Barrel and muzzle device are the only parts different between a .223 upper and a .300 AAC upper. The receiver, BCG, gas system, etc are all the same.


Agreed.



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Thanks, that's what someone had told me earlier, that will make it somewhat easier on the budget! Just a barrel and I should be good to go, well, plus optics now, but I can put that upper money into that instead.