HUXWRX MUZZLE BRAKE-QD 762 M18X1 The Muzzle Brake-QD 762 M18x1 is designed for maximum recoil reduction when unsuppressed. Muzzle Brake-QD caliber/compatibility: Muzzle Brake-QD 762: HX-QD 762, 762 Ti and Magnum Ti suppressors Muzzle device length is 2.3, length added to barrel is 1.7 inches NOTE: Larger caliber mounts are NOT compatible with smaller caliber suppressors. Smaller caliber mounts ARE compatible with larger caliber suppressors. Mfg: Huxwrx