The storage-capable version of the flagship Magpul MOE SL carbine stock, the MOE SL-S (Storage) Carbine Stock - Mil-Spec is a direct replacement buttstock for AR15/M4 carbines. The sleek profile, dual-side release latches, and waterproof battery tubes make it the slimmest storage tube stock available. The SL-S provides an enhanced cheek weld and true, O-ring sealed, 10m waterproof storage area desired by many, but fits it into the narrowest package possible to allow a more upright head position and minimize bulk. A rolled toe and angled rubber butt-pad are optimized for use with body armor, and an ambidextrous QD sling swivel socket is included. A unique leaf-spring tension system provides a solid fit on mil-spec receiver extensions, with slightly less friction than the original SL. The MOE SL-S is the most intuitive, comfortable, and efficient storage stock available. Product Features Waterproof Storage Enhanced Cheek Weld Rubber Butt Pad Long Lasting Adjustability Compatibility Sling Point Variety Rollover Toe to Fit you Gear Product Specifications Platform AR10, AR15, M4, M16, M110, SR25 Compatibility Mil-Spec sized carbine receiver extension tube (not included) from manufacturers such as Colt, LMT, Ruger, S&W, SIG, and others LOP, M4 Collapsed ~10.9 in. LOP, M4 Extended ~14.2 in. LOP Adjustment Range 3.3 in. Length, max 7.3 in. Weight 12.8 oz. Weight, w/ receiver extension 16.8 oz. Width, max 2.4 in.