The revolutionary patented 'GL-Shock' absorbing Buttstock contains a recoil-reducing mechanism with a built in premium silicon chrome alloy spring creating a State-of-the-Art stock for your M4/M16.
(a) Unique Patented “Anti-Rattle” Mechanism
(b) Sleek New Design with No Protruding Parts,Will Not Get Caught on Gear and Webbing
(c) Unique New Slick and Quick Operated Inversed Positioning Lever
(d) Integral Ribbed Rubber Butt Pad with a Non Slip Design
(e) Integrated Quick Detach “QD” Sling Swivel Connectors on Both Sides
(f) Watertight Battery Storage for Two CR123A 3V Lithium Batteries / AA 1.5v
(g) Fits Perfectly on Both Tubes - MIL-SPEC and Commercial Aftermarket!
(h) Made from Mill-Spec Reinforced Composite Polymer
(i) With an Adjustable Cheek Rest.