Complete Bolt carrier group, Machined from S7 Tool Steel, Lithium Isonite Coating, 4 Setting Adjustable Vent System relieves excess gas pressure created from suppressor use, creating longer dwell time and less blowback to the shooter. Gas Adjustment can be turned while installed in the rifle
 5.56 MM 1/2×28 threaded Compatible for use with all 5.56 and 7.62 Surefire SOCOM suppressors Avoid Snags. If a traditional birdcage flash hider is what you want, SureFire’s WARCOMP-556-CTN significantly reduces muzzle flash with every shot fired and helps reduce muzzle rise for easier target tracking and faster follow-up shots.…