YHM offers their Phantom Q.D. Mount muzzle brake for their Sound Suppression Systems. Sound suppressors naturally work as a muzzle brake, and this Phantom Q.D. Mount will decrease recoil of your host firearm when the suppressor is not in use. Compatible with all 1.375"-24 HUB capable suppressors utilizing YHM's Phantom Q.D. Adapter (YHM-3060) including their Fat Cat, Turbo T2, Turbo T3, Turbo K, Turbo K-RB, Resonator R2, Resonator RK, Nitro N2O. Also works with legacy .30 caliber suppressors including our Phantom .30, Phantom LT/LTA, Nitro and Resonator gen. 1 suppressors. This muzzle brake WILL NOT accommodate our Phantom 5.56mm, Phantom 5.56 M2, or Turbo gen. 1 Sound Suppressors. YHM's Shim Kit is included in the price. Muzzle device length is 2.418". Length added to barrel is 1.793" (on barrels with 0.6" threads).