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Quick-detach suppressor mounts have a habit of adding weight and length right where you don't want it. Yankee Hill Machine went the other direction with the sRx Mini Muzzle Brake. This little device measures just 1.10 inches overall and adds less than half an inch to your barrel once it's threaded on, which makes it one of the most compact QD mounting solutions out there. It's machined from steel with a black phosphate finish, threads on at 1/2-28, and has no moving parts to wear out or rattle loose.
This brake is one half of the equation. It pairs with the YHM sRx Adapter (YHM-4400, sold separately), which threads into any suppressor with the industry-standard 1.375×24 HUB interface. That includes YHM's own Fat Cat and Cat's Ass cans along with a long list of HUB-compatible suppressors from other makers. Once the adapter is in your can, mounting is quick and there's no clocking or timing fuss when you spin the suppressor on and off.
The standout feature here is the internal taper seal sitting in front of the threads. When you lock your suppressor down, that taper forms a tight gas seal, so carbon and debris never reach the threads themselves. Anyone who has fought a suppressor welded on by carbon buildup will appreciate what that means over hundreds of rounds. The mount stays smooth, the fit stays consistent, and takedown stays easy.
YHM makes the sRx brake in longer versions, but the Mini is the pick when you're chasing the shortest, lightest setup possible. It's a great match for SBRs, pistol builds, and any host where overall length matters more than maximum recoil reduction. It's American-made, simple, and does its one job well: giving you a rock-solid QD mounting point that all but disappears under your suppressor.
Yes, you'll need the YHM sRx Adapter (YHM-4400), which is sold separately. The adapter threads into your suppressor's 1.375×24 HUB mount and locks onto the brake's taper seal. Without it, this is just a standard threaded muzzle brake with no QD function.
As long as your suppressor uses the industry-standard 1.375×24 HUB thread pattern, the sRx Adapter will fit it, and that adapter is what mates to this brake. It works with YHM's Fat Cat and Cat's Ass cans as well as HUB-compatible suppressors from plenty of other manufacturers. Just confirm your can is HUB-threaded before ordering.
The device itself is only 1.10 inches long, and on a barrel with standard 0.6 inch threads it adds about 0.475 inches past the muzzle. That's a big reason folks pick the Mini over full-size QD brakes, especially on SBRs and pistol builds where every fraction of an inch counts.
No. The sRx system uses a taper seal that locks up the same way every time, so there's no timing or indexing to mess with. You just spin the suppressor on until the taper seats, and the seal also keeps carbon off the threads so removal stays easy even after long range sessions.
| UPC | 841812101505 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | YHM-4401-MB-28 |
| Caliber/Gauge | .223 REM/5.56 NATO |
| Color | Black |
| Length | 7.1 |
| Model | |
| Package Height | 1.4 |
| Package Width | 3.2 |
| Product Type | Accessory-Muzzle Brakes |
| Shipping Weight | 0.1 |
| Thread Pattern | 1/2"-28 tpi |
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