Primary Weapons Systems FRC 5.56 NATO Flat Triad Suppressor Mount Compensator for 13.8" Barrels - 1/2x28

The Primary Weapons SystemsA(R) FRC 5.56 NATO Flat Triad Suppressor Mount Compensator for 13.8" Barrels - 1/2x28 is a compensator that is externally threaded for use with Reardan type suppressor mounts. An external taper assists in concentricity and reduces carbon buildup on threads. The 3 port design with a flat shoulder is perfect for shooting unsuppressed. Features a 1/2x28 thread pitch. Made in USA.2.75" overall length extends 13.8" barrels to non-NFA length when pin and welded. Crush washer not recommended; timing not required.