For users who desire a muzzle brake instead of a flash hider YHM now offers this Q.D. Mount muzzle brake for our Light Tactical .30 Cal. Sound Suppression Systems. Sound suppressors naturally work as a muzzle brake this Q.D. mount will decrease recoil of your host firearm even more. – This muzzle brake WILL NOT accommodate our 5.56 Phantom® Phantom® 5.56 M2 Turbo® Turbo® T2 or Turbo® K Sound Suppressors. – Our Redesign of the YHM-5M2-QD has a smooth sleek look which eases cleaning and because of popularity we decided to apply this to our .30 Cal. Muzzle Brakes. The redesign also features an improved mounting service which makes attachment quicker and easier.