AR-10 .308 24" stainless steel diamond fluted bull upper assembly / Mlok

I received this item within about a week. The upper came without the brake-its a bull barrel. After sighting-in at 50 yds, my first 3 shots were touching. The miraculous part about the grouping is that it was done with mil-spec M80 ammo from Prvi Partizan. I continued to shoot about another 70 or so rounds, during which point the action quit cycling. When I got home I removed the handguard to reveal that the screws retaining the gas block had loosened, allowing the gas block and tube to slide forward, resulting in no gas delivery. The takeaways from this are: 1.) this upper is definitely capable of sub-moa accuracy with match grade ammo, 2.) The weight of the assembly with the optic and bull barrel, combined with the spring loaded buffer system made the .308 round quite friendly to shoot, thus I was actually glad I didn't get the brake after all, 3.) you might want to double check the torque of the gas block screws before heading to the range. Overall, it's a great product. I will be ordering again soon.

Great product! Love it love it love it! Surprised with the quality.