[USAF80]

There is a reason why the military only uses 30 round mags. For anything larger that that they use belt fed ammo. I have seen a civilian AR with a belt fed adapter and a belt in the local gun store. Not full auto though.

[trebb]

There is a reason why the military only uses 30 round mags. For anything larger that that they use belt fed ammo

Extended magazines make lousy tripod braces...