Yankee Hill Machine Company sRx Short QD Muzzle Brake Features The Yankee Hill Machine sRx Short Muzzle Brake is part of YHM s sRx product line engineered with aesthetics and ease of use as top priorities for shooters running a quick detach suppressor system. The brake s Q.D. adapter and mounting interface attach to the industry standard 1-3/8 inch by 24 thread HUB giving it broad compatibility with suppressors built around that mounting standard. An internal taper located in front of the threads locks a suppressor in place and forms a tight seal that contains propellant gases which keeps debris from building up on the threads over repeated use. This design must be paired with the YHM sRx Adapter to function as a complete mounting system. Machined from 4140 steel and finished in a durable black phosphate coating the sRx Short Muzzle Brake measures just 1.6875 inches in length and 0.75 inch in diameter adding minimal bulk to a suppressed barrel. Because the brake has no moving parts and requires no shimming or timing to the barrel installation stays simple and consistent every time it is mounted. It is also lighter than many other quick detach mounting offerings on the market making it a practical choice for shooters who care about keeping their suppressed setup trim. Threaded for .578-28 the Yankee Hill Machine sRx Short Muzzle Brake is for sale at GrabAGun for shooters building a low profile duty ready suppressor mount. Yankee Hill Machine Company sRx Short QD Muzzle Brake Specifications Manufacturer: Yankee Hill Machine Company Type: Muzzle Brake Thread Pitch: .578-28 Length: 1.6875 Diameter: 0.75 Material: 4140 Steel Color: Black Finish: Melonite/Black Phosphate Available At: GrabAGun