I just received mine today and man, this thing is sweet. I'm not trying to steal sales from 82nd's group buy but if you want a DC style brake to rival the JP, this is it. They are pricey at $150 but I have yet to see a DC brake like it. I'll have to wait till my rifle is back together (maybe a month away) to give an official report but looking at the design this thing looks like it'd tame a .338 lap mag. Threaded on, it covers about the same amount of muzzle as an SEI Vortex and hangs past the muzzle on my barrel 1 3/4 inches (the same as my Troy did). It also accepts a SureFire sound suppressor if desired. So far I'm impressed with the construction and design but the real test will be at the range... hope anyone to the sides is wearing good ear protection.