This is a 2A Armament Compensator known as the X3 chambered in 762NATO, model 2A-COMP-X3.
The X3 has all the same great features as our popular T3" with the optimization for .30 cal/.300 BLK use. The X3 is a dual baffle compensator that directs expelled gasses to control muzzle direction. The initial baffle directs gas in a geometrical pattern that stabilizes the rifle system. The second baffle system channels gasses upward to compensate for muzzle rise. This gives the shooter the ability to decrease the time between follow up shots and maintain control of muzzle direction.
Features:
7.62mm/.308/.300BLK caliber or smaller applications
Blasted and black phosphate coated
Threaded 5/8 x 24 TPI for most common applications