SIG SAUER QD Taper-Lok Muzzle Brake Mount For SRD338-QD M18x1 TPI. Sig Sauer designed these Muzzle Brakes & Compensators with a durable steel construction and a lightweight yet rugged design creating a reliable system that creates less recoil for quicker target acquisition and better accuracy. The Sig Sauer QD Taper-Lok SRD338-M18X1 TPI Muzzle Brake Mount provides a self-centering and secure interface that aligns and secures both the mount to the gun and then the silencer to the mount. Equip the Sig Sauer QD Taper-Lok Mount For SRD338-QD M18x1 TPI SRD-338-M18X1-B to your muzzle equipped weapon for an instantly installed muzzle brake system that will greatly improve your accuracy and overall shooting experience. Specifications for Sig Sauer QD Taper-Lok Muzzle Brake Mount For SRD338-QD M18x1 TPI SRD-338-M18X1-B: Mfg Item Num: SRD-338-M18X1-B Type: Silencer Mounts/Accessories Thread: M18x1 For: SRD338-QD Master Model Header: QD Taper-Lok Muzzle Brake Mount Package Contents: SIG SAUER QD Taper-Lok Muzzle Brake Mount For SRD338-QD M18x1 TPI SRD-338-M18X1-B SIG SAUER Infinite Guarantee SIG SAUER QD Taper-Lok Muzzle Brake Mount For SRD338-QD M18x1 TPI