Blacks already have AR-15's and more?!! I personally don't like them, I'm like 30.06 and .308 caliber rifles myself!
https://naaga.co/gallery/
Duh!
The .308 and .30-06 shoot the same dia. bullet (.308). Only difference is case length and the '06 can hold a bit more powder.
As for functionality, the M1-A and the AR-15 are very similar, the AR-10 comes in the .308 caliber.
The AR-15 in .223 is much cheaper to shoot than the .308 or the .30-06.

