This is a Primary Weapons Systems Compensator chambered in 223 Remington, model 18-3PRC12A1.
The PRC compensator" originally introduced for .30 only" was designed to reduce felt recoil as much as possible. Redesigned in 2018" now in a variety of caliber options" this compensator is very effective in reducing felt recoil" while being California compliant. The PRC design produces a low ground signature and overpressure to the shooter It also gives ultimate control for seeing impacts through your optic and stabilizes follow up shots.
Features:
1/2X28 Thread pitch
4140 Steel construction
Made for use with 5.56 caliber weapons