The Yankee Hill sRx Q.D. Flash Hider is a quick-detach muzzle device engineered for shooters who want a clean, low-profile suppressor setup without the fuss of timing and shimming. Built on YHM's sRx platform, this 9mm flash hider pairs a streamlined design with rock-solid functionality—making it an ideal choice for tactical builds, suppressed duty carbines, and precision 9mm platforms where aesthetics and reliability matter equally.
What sets the sRx system apart is its internal taper seal design. Rather than relying on shims or complex timing procedures, the tapered geometry in front of the threads locks your suppressor firmly in place and creates a tight seal that keeps carbon and debris off the mating surfaces. You get consistent, repeatable mounting every time, with no maintenance headaches. The flash hider itself adds minimal length and weight to your setup—just 2.30 inches of overall length and a slim 0.9375-inch diameter—so your gun stays nimble and pointable.
Constructed from 4140 steel with a black phosphate finish, this device is built to weather hard use. The 1/2"-28 TPI threads match standard 9mm barrels, and it interfaces with YHM's sRx quick-detach adapter system, which mounts via industry-standard 1-3/8" x 24 HUB threads. Whether you're running a single suppressor across multiple hosts or building a dedicated 9mm setup, the sRx platform delivers the kind of modular flexibility that makes sense for serious shooters.
This is straightforward equipment for people who refuse to compromise between form and function. No frills, no moving parts to break, no proprietary nonsense—just a purpose-built flash hider that integrates seamlessly into a capable suppressor system.
| Thread Size | 1/2"-28 TPI |
| Caliber | 9mm (.390 diameter) or smaller |
| Overall Length | 2.30 inches |
| Outside Diameter | 0.9375 inches |
| Material | 4140 Steel |
| Finish | Black Phosphate |
| Adapter Interface | 1-3/8" x 24 HUB (sRx system) |
Yes, provided your barrel has 1/2"-28 TPI threads. The sRx flash hider is designed for standard 9mm barrels and will accept the YHM sRx quick-detach adapter system for suppressor mounting.
The flash hider mounts any suppressor equipped with a compatible sRx quick-detach adapter. The adapter itself attaches via the industry-standard 1-3/8" x 24 HUB threads on the front of this device. Check your suppressor's compatibility with YHM sRx adapters.
No. The sRx system's internal taper seal design locks and aligns automatically—no shimming or timing required. Installation is straightforward and the mounting remains repeatable across uses.
Yes. While the sRx design is optimized for quick detachment, the device can be permanently installed on your barrel if you prefer a fixed setup.
Yankee Hill Machine
Yankee Hill Machine
