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The Yankee Hill Machine SHORT SRX Flash Hider in 5/8-32 thread pitch is a compact muzzle device designed for shooters who want suppressor-ready performance without bulk. Built from 4140 steel with black phosphate finish, this flash hider pairs with the YHM sRx mounting system to create a low-profile, easy-to-use suppressor setup. If you're building a precision rifle, AR, or other platform where aesthetics and function matter equally, this is a no-nonsense component that does its job without unnecessary weight or length.
The sRx Short Flash Hider uses an internal taper seal in front of the threads that locks your suppressor in place and forms a tight seal to contain gases during use. That means no gas or debris buildup on the threads—a real advantage for long shooting sessions or suppressed work where cleanliness matters. The quick-detach interface is built on the industry-standard HUB threading pattern (1-3/8 x 24), so you're tapping into a proven mounting standard, not a proprietary dead end.
This flash hider adds minimal weight and length to your setup, which is exactly what shooters want in a suppressor platform. The large taper ensures consistent mounting every time, and there are no moving parts to fail or complicate the design. Best of all: it requires no shimming or timing to your barrel. If you're running suppressed and value a sleek, purposeful build, the sRx Short Flash Hider is worth considering—especially if you plan to use the full YHM sRx system. Just remember you'll need to pair it with the YHM sRx Adapter (sold separately) to unlock the full potential of the platform.
| Length | 1.8125 inches |
| Diameter | 0.75 inches |
| Thread Pitch | 5/8-32 |
| Material | 4140 Steel |
| Finish | Black Phosphate |
| Mounting Interface | Quick-Detach (HUB 1-3/8 x 24 compatible) |
Yes. The sRx Short Flash Hider must be paired with the YHM sRx Adapter (YHM-4400, sold separately) to function as part of the sRx system. The adapter is what connects the flash hider's quick-detach interface to your suppressor or other sRx-compatible components.
This model is threaded 5/8-32. Make sure your barrel is cut to 5/8-32 before ordering—YHM also offers this flash hider in 5/8 x 24 and 11/16 x 24 for other platforms. Using the wrong thread pitch will result in an unsafe, non-functional install.
The sRx Short Flash Hider is designed as a quick-detach mounting interface for suppressors and other sRx-compatible devices. It uses an internal taper seal that locks your suppressor in place and prevents gas leakage at the threads. Any suppressor with an sRx-compatible mounting system will work with this flash hider and the YHM sRx Adapter.
Yes. The sRx Short Flash Hider can be permanently pinned and welded to your barrel if that suits your build or legal requirements in your jurisdiction.

SKU: 115754713 • Weight: 0.125oz