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Yankee Hill Machine
The YHM SRX Short QD Flash Hider in .578-28 thread is a quick-detach muzzle device built for shooters who want clean aesthetics without sacrificing functionality. Part of Yankee Hill Machine's sRx (Suppressor Rx) system, this flash hider pairs with the YHM sRx Adapter to create a low-profile suppressor platform that requires no shimming or timing—just mount and shoot. It's engineered for the shooter who values both how their rifle looks and how reliably it performs.
The sRx Short design adds minimal length and weight to your setup compared to other quick-detach systems, making it ideal for rifles where real estate on the barrel matters. The internal taper seal locks your suppressor firmly in place and prevents gas and debris from accumulating on the threads, keeping your system clean and your connection tight. Built from 4140 steel with a black phosphate finish, this muzzle device is made to handle rigorous use without degrading.
Because the sRx system uses a large taper interface in front of the threads, you get consistent, repeatable mounting every time you attach or remove your suppressor—no fiddling with shims or timing tools. If you're running a modern tactical build, a precision rifle, or any gun where you plan to suppress and unsuppress regularly, the sRx platform takes the guesswork out of the process. Note that this flash hider must be paired with the YHM sRx Adapter (sold separately) to function within the sRx system.
| Brand | Yankee Hill Machine |
| Product | sRx Short QD Flash Hider |
| Thread Size | .578-28 (5/8" x 28) |
| Length | 1.8125" |
| Diameter | 0.75" |
| Material | 4140 Steel |
| Finish | Black Phosphate |
| Caliber | .45 caliber and larger |
| Mounting System | sRx quick-detach (requires YHM sRx Adapter) |
Yes. The sRx Short Flash Hider must be paired with the YHM sRx Adapter (YHM-4400) to function as a quick-detach suppressor mount. The adapter threads into your barrel, and the flash hider attaches via the quick-detach interface.
Many quick-detach systems require shims (thin metal washers) to properly time the suppressor so it's concentric with the bore. The sRx system's large taper interface is engineered to seat consistently without them, saving you setup time and eliminating a potential source of concentricity error.
The flash hider itself is 1.8125" long. On a barrel with 0.6" of exposed threads, it adds approximately 1.175" of length to your overall rifle setup.
No. When attached to the sRx Adapter and mounting a suppressor, the suppressor screws directly onto the adapter interface. The flash hider is removed during suppressor use and can be reattached when running without suppression.
Yankee Hill Machine
The YHM SRX Short QD Flash Hider in .578-28 thread is a quick-detach muzzle device built for shooters who want clean aesthetics without sacrificing functionality. Part of Yankee Hill Machine's sRx (Suppressor Rx) system, this flash hider pairs with the YHM sRx Adapter to create a low-profile suppressor platform that requires no shimming or timing—just mount and shoot. It's engineered for the shooter who values both how their rifle looks and how reliably it performs.
The sRx Short design adds minimal length and weight to your setup compared to other quick-detach systems, making it ideal for rifles where real estate on the barrel matters. The internal taper seal locks your suppressor firmly in place and prevents gas and debris from accumulating on the threads, keeping your system clean and your connection tight. Built from 4140 steel with a black phosphate finish, this muzzle device is made to handle rigorous use without degrading.
Because the sRx system uses a large taper interface in front of the threads, you get consistent, repeatable mounting every time you attach or remove your suppressor—no fiddling with shims or timing tools. If you're running a modern tactical build, a precision rifle, or any gun where you plan to suppress and unsuppress regularly, the sRx platform takes the guesswork out of the process. Note that this flash hider must be paired with the YHM sRx Adapter (sold separately) to function within the sRx system.
| Brand | Yankee Hill Machine |
| Product | sRx Short QD Flash Hider |
| Thread Size | .578-28 (5/8" x 28) |
| Length | 1.8125" |
| Diameter | 0.75" |
| Material | 4140 Steel |
| Finish | Black Phosphate |
| Caliber | .45 caliber and larger |
| Mounting System | sRx quick-detach (requires YHM sRx Adapter) |
Yes. The sRx Short Flash Hider must be paired with the YHM sRx Adapter (YHM-4400) to function as a quick-detach suppressor mount. The adapter threads into your barrel, and the flash hider attaches via the quick-detach interface.
Many quick-detach systems require shims (thin metal washers) to properly time the suppressor so it's concentric with the bore. The sRx system's large taper interface is engineered to seat consistently without them, saving you setup time and eliminating a potential source of concentricity error.
The flash hider itself is 1.8125" long. On a barrel with 0.6" of exposed threads, it adds approximately 1.175" of length to your overall rifle setup.
No. When attached to the sRx Adapter and mounting a suppressor, the suppressor screws directly onto the adapter interface. The flash hider is removed during suppressor use and can be reattached when running without suppression.
