Rearden Manufacturing FHD Flash Hider 1/2-28 Square Heat Treated - .375 Bore

The Rearden Manufacturing FHD flash hider is a precision muzzle device built to mate with Rearden's Atlas, Atlas XL, and Plan B mounting systems. Machined from 17-4 PH H900 steel and finished with a heat-treated surface rated at 67 HRC hardness, this FHD is engineered for the demands of repeated suppressor mounting.

This version is the 1/2-28 threaded model with a square shoulder configuration and an updated rear profile featuring larger wrench flats for easier installation and removal. The .375 bore provides the correct indexing shoulder for direct-mounting compatible Rearden suppressors and adapters.

Whether you're building out a Plan B-compatible host or upgrading an existing Rearden-equipped rifle, the FHD delivers the durability of 17-4 PH H900 steel with a heat-treated finish. Shims are not included and are sold separately.