Primary Weapons Systems FRC 2-Port Compensator Features The Primary Weapons Systems FRC 2-Port Compensator is a tapered shoulder muzzle compensator threaded at 1/2x28 engineered for barrels with a tapered shoulder profile and purpose-built to serve as a suppressor host for the Rearden Atlas and Atlas XL mounting systems across the broadest range of rifle and pistol-caliber carbine platforms at the most common thread pitch. The 2-port design redirects muzzle flash away from optics and the shooter s line of sight maintaining a clear unobstructed sight picture during rapid fire while minimizing the distracting overpressure that affects conventional muzzle devices. When paired with a compatible Rearden Atlas or Atlas XL suppressor the FRC 2-Port Compensator delivers a tight lockup that holds through hard shooting cycles without loosening or shifting under sustained fire. The tapered shoulder 1/2x28 2-port compensator and suppressor host covers calibers from .22 to .375 extending compatibility across pistol-caliber carbines and smaller bore rifle platforms that the 5/8x24 version does not cover making it a versatile suppressor host option for shooters running 1/2x28 threaded barrels with a tapered shoulder profile. The compact 1.64 overall length adds minimal protrusion beyond the muzzle while still delivering effective flash management and a reliable suppressor mounting interface for Rearden Atlas and Atlas XL adapters. The tapered shoulder design provides the precise indexing interface needed for consistent suppressor alignment across all compatible Atlas and Atlas XL mounting configurations. Primary Weapons Systems FRC 2-Port Compensator Specifications Manufacturer: Primary Weapons Systems Model: FRC 2-Port Compensator Type: 2-Port Compensator Thread Pitch: 1/2x28 Shoulder: Tapered Caliber Compatibility: .22 to .375 Mount Compatibility: Rearden Atlas Rearden Atlas XL Length: 1.64