The Yankee Hill sRx QD Mini Muzzle Brake is a quick-detach muzzle device built for shooters who want a compact, low-profile suppressor setup without sacrificing precision or durability. Sized for 9mm and smaller calibers with a 1/2"-28 TPI thread pitch, this muzzle brake integrates with Yankee Hill's sRx system—a modern mounting interface that prioritizes ease of use and consistent alignment. Unlike traditional shimmed devices, the sRx design eliminates timing complications and delivers a repeatable zero every time you attach or detach a suppressor.
Made from 4140 steel with a black phosphate finish, the sRx Mini Muzzle Brake weighs and measures conservatively: just 1.10 inches in overall length and 0.9375 inches in diameter. That compact footprint means minimal added length to your barrel (0.475 inches on standard 0.6" threaded barrels) while you gain all the functional benefits of the sRx system. The internal taper seal locks your suppressor in place and forms a tight seal that prevents gas and debris buildup on the threads—keeping your setup cleaner and your maintenance simpler.
This is a purpose-built component for the rifle or pistol owner who values both aesthetics and reliability. The sRx Mini Muzzle Brake must be used with a compatible Yankee Hill sRx Adapter to function as a quick-detach interface. If you're building a sleek, low-profile suppressed firearm that doesn't compromise on rigidity or ease of use, this brake delivers the solid engineering you'd expect from Yankee Hill's reputation in the precision muzzle-device space.
| Caliber | 9mm (.390 diameter) or smaller |
| Thread Pitch | 1/2"-28 TPI |
| Overall Length | 1.10" |
| Diameter | 0.9375" |
| Length Added to Barrel | 0.475" (on barrels with 0.6" threads) |
| Material | 4140 Steel |
| Finish | Black Phosphate |
| Mounting System | sRx Quick-Detach (requires sRx Adapter) |
The sRx Mini Muzzle Brake works as a quick-detach interface with the Yankee Hill sRx Adapter system. You'll need the compatible sRx Adapter (YHM-4400) to attach this brake to your barrel. The system is designed to work with suppressors that have the standard 1-3/8" x 24 HUB mounting interface.
This model features a 1/2"-28 TPI (threads per inch) thread pitch, suitable for 9mm and smaller caliber barrels. Yankee Hill also offers sRx brakes in 5/8" x 24 TPI for larger calibers.
No. The sRx system's large internal taper eliminates the need for shimming or timing. The brake seats consistently every time, simplifying installation and ensuring your suppressor returns to zero with repeated attachment and detachment.
The sRx Mini Muzzle Brake is the muzzle-mounted component only. You'll need to purchase the Yankee Hill sRx Adapter separately to complete the quick-detach mounting system.
Yankee Hill Machine
Yankee Hill Machine
