We had comfort and functionality in mind when we designed this brace for your AR pistol. Five different lengths and a slot for a strap make adjusting it to your arm extremely easy. The 3oz micro buffer means the system fits easily on any of your guns with a carbine buffer. A QD sling mount allows you to carry your pistol in a slung position for maximum maneuverability while not in a ready position.Features:Available Color: Black, Urban Grey, Coyote Brown and Ranger Green6061-T6 aluminumCompatibility: 9mm, 300 black out, .223/5.56, 6.5 Grendel5 length positionsForward QD mountCompact buffer tube3oz bufferArm strap not included