Description
The Yankee Hill 4405MB28 is the long configuration of YHM’s sRx quick-detach muzzle brake, designed around 9mm Luger pistol-caliber carbines and AR-platform hosts running a 1/2×28 barrel.
Machined from steel and finished in a non-reflective black phosphate coating, this brake threads 1/2×28 to screw directly onto a 9mm barrel nut or muzzle. The extended long-body profile measures 2.30″ overall, giving this configuration a longer footprint than YHM’s shorter sRx 9mm muzzle devices.
When paired with a Yankee Hill sRx adapter, the 4405MB28 locks up solidly and can be swapped out by hand for any sRx-compatible flash hider or suppressor in the YHM lineup. It ships ready to install on any properly threaded 9mm barrel.
