Yankee Hill sRx Short QD Muzzle Brake 5/8 - Low-Profile sRx Brake for HUB Systems The Yankee Hill sRx short QD muzzle brake delivers low-profile performance and refined aesthetics for suppressed builds. Machined from steel with a black phosphate finish, the brake adds minimal length and weight while providing effective muzzle-rise and recoil control through tuned porting and mass distribution. A large forward taper ahead of the threads forms an internal seal that locks the can to the adapter and prevents gas and debris from fouling the threads, improving repeatability and service life. Part of the YHM sRx system, the brake mates to the YHM sRx adapter YHM-4400 and uses the industry standard 1.375A-24 HUB thread form for quick-detach mounting. The sealed taper removes the need to time the device or use shims, and the simple, no-moving-parts interface makes installation tool-simple and rock-solid when paired with the sRx adapter. The sRx short brake is ideal for users who want a sleek, low-profile suppressor setup that endures rigorous use without compromising rifle aesthetics. Note: The sRx muzzle brake requires the YHM sRx adapter for proper operation. Verify adapter selection and visually confirm baffle alignment after installation before firing.