Mako

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. - Adjustable Cheek Piece with Built-In Dual Picatinny Rails allows optimal Buttstock functionality - Advantages: - Unique Patented Anti-Rattle Mechanism - Sleek New Design with No Protruding PartsWill Not Get Caught on Gear and Webbing - Unique New Slick and Quick Operated Inversed Positioning Lever - Integral Ribbed Rubber Butt Pad with a Non Slip Design - Integrated Quick Detach QD Sling Swivel Connectors on Both Sides - Watertight Battery Storage for Two CR123A 3V Lithium Batteries / AA 1.5v - Fits Perfectly on Commercial Aftermarket! - Made from Mill-Spec Reinforced Composite Polymer - Adjustable Cheek Rest with Built-In Dual Picatinny Rails - Allows Optimal Buttstock Functionality - Ideal Mounting Solution for the SH-5