For users who desire a muzzle brake instead of a flash hider, YHM now offers this Q.D. mount muzzle brake. Sound suppressors naturally work as a muzzle brake, this Q.D. mount will decrease recoil of your host firearm even more. Our 3 chamber design has no downward facing ports which helps eliminate dust signature when shooting in the prone position as well as acting as a compensator. Our Redesign of the YHM-5M2-QD has a smooth sleek look which eases cleaning. The redesign also features an improved mounting service which makes attachment quicker, and easier. Features: The devices should be torqued to between 20 and 30 lb/ft