I have a complete Bushmaster for my 5.56 AR, no complaints about the entire rifle and I've put about 1k rounds through it. This gunthread doesn't have enough pictures:
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300BLK PSA Upper/Lower/BCG
Magpul stock, grip, backup sights
Nikon P-300 Blackout Rifle Scope 2-7x 32mm BDC on a q/d mount with repeatable origin
China-Special bipod and light
BOG FieldPod Magnum
Not Pictured: China-Special NV monocle and 18650 IR illuminator- I need to figure out how I am going to mount it inline with the scope.