Griffin Armament Barrel Adapter, CAM-LOK, 1/2X28 PI1228

CAM-LOK� (Covert Application Mount-Locking) Patented Universal QD piston attachment system - 3 mounting positions 120 degrees separated for rapid mounting - Forward taper surface locks in place with interfacing piston and drastically reduces or eliminates common baffle/end cap strikes - Coarse threads are top cut to increase durability and wear resistance - 3/4or 19mm wrench pattern accommodates socket wrench for secure and easy installation - Compatible with Universal QD pistons (sold separately) - Internal bore reduces side concussion and visual disturbance vs blind muzzle - Total system weight is identical to legacy direct thread pistons - QPQ Nitride finish for attractive durable black finish - 17-4 stainless steel material - Also supports Universal Carry Comp