The Yankee Hill Machine (YHM) sRx Short Q.D. Flash Hider is a compact muzzle device engineered for the YHM sRx mounting system. It is a short-profile Q.D. flash hider that mates to the industry-standard HUB interface when used with the YHM sRx Adapter (YHM-4400). The design features an internal taper seal in front of the threads to form a consistent seal and help prevent gas or debris buildup on the threads. This device adds minimal length and weight to a suppressor setup while supporting a low-profile appearance.
Key Specifications
- The thread size is 11/16×24 tpi.
- The model is sRx.
- The muzzle device length is 1.8125 inches.
- The length added to the barrel (on barrels with 0.6″ threads) is 1.175 inches.
- The diameter is 0.75 inches.
- The finish is Black Phosphate.
- The product includes a shim kit.
- The unit requires the YHM sRx Adapter YHM-4400 for use with the sRx mounting system.
- The listed weight is 0.95.
This short Q.D. device is intended for shooters seeking a minimal, functional muzzle interface within the YHM sRx system. Its low profile and tapered front-thread seal focus on repeatable, clean mounting rather than added bulk, making it suitable for builds where a compact suppressor-ready muzzle device is desired.





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