Rearden FHD .375 Cal 5/8x24 Square Shoulder Flash Hider - Heat Treated - Plan B Compatible

The Rearden FHD is a 3-prong flash hider CNC machined from 17-4 PH stainless steel and finished to a 67 HRC surface hardness for outstanding durability under hard use. Designed around the proven Plan B mounting interface, this suppressor-ready muzzle device reduces blast and flash signature while doubling as a rock-solid mount for compatible Plan B, Atlas, and Atlas XL suppressors.

This specific variant is bored for the .375 caliber and is threaded 5/8x24 with a square shoulder for a precise, repeatable install against the barrel shoulder. The classic 3-prong design provides effective flash suppression on its own, while the enlarged wrench flats on the body make installation straightforward with a standard armorer's tool. The Heat Treated finish (H900) delivers the surface hardness needed to hold prong geometry even after extended strings of fire, and the Plan B pattern provides a universal suppressor mount solution that ties into the rest of the Rearden suppressor family.

Whether you are running a large-bore precision rifle or simply want a low-flash, suppressor-ready muzzle device in a compact, lightweight package, the Rearden FHD Heat Treated brings together premium 17-4 PH stainless construction, an H900 heat-treated finish, and the widely adopted Plan B mounting standard in one part.