Blackhawk Knoxx Adjustable Carbine Rifle Buttstock AR/M4 Commercial Size Tube in Black.
Precision fit for quick and smooth length adjustment. Designed for comfortable cheek weld. Ambidextrous sling mounting locations for quick detach, 1 to 1.25 inch slings and lanyards. Durable reinforced polymer construction for extreme use.
Manufacturer #: K11001-C