I recently got a Windham Weaponry AR-10 and so far it has functioned well. It has swallowed 147gr FMJs and 180gr Remington Core-Locks without a hiccup and I have done a ladder with 42-47grs of TAC pushing a 150 Hornady Interlock as well. Disassembled the bolt and cleaned it once so far. Throws all brass to 1-2 o'clock but doesn't damage it. So far I'm happy.

An armed member in a country is a citizen, an unarmed member is a subject.