Kak Industry Plan B Universal Muzzle Device 5.56mm 1/2-28

Plan B muzzle devices use a taper followed by threads, which gives repeatable lockup and a proper seal between the muzzle device and a Plan B suppressor mount. This universal bore version threads onto 1/2-28 muzzles and is engraved with its thread pitch.

It is stainless steel with a nitride finish, 1 inch long with a .895 inch outside diameter, and weighs 1.6 oz. Milled 13/16 inch flats make installation easy; KAK recommends Rocksett and 20 to 25 ft-lbs of torque. Some suppressor makers will not honor warranty claims when another brand's muzzle device is used, so check yours.