The storage-capable version of the flagship Magpul MOE SL(TM) carbine stock, the MOE SL-S (Storage) Stock 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. Features a Mounts on mil-spec sized carbine receiver extension tube (not included) from manufacturers such as Colt, LMT, Ruger, S&W, SIG, and others a Two water-resistant battery storage tubes located on the left and right sides of the stock a Each tube will store up to two (2) CR123A lithium or AA batteries a Tubes are accessible from the rear in any stock position via hand-removable, o-ringed rubber plugs that are waterproof to 10 meters a Sloping cheek weld combines a slim profile with user comfort a Dual-side release latch provides easy adjustment while remaining anti-snag a Premium chrome-silicon lock spring provides positive locking and long service life a Internal anti-rattle leaf spring minimizes wobble on receiver extension tube a Rubber butt-pad offers an anti-slip surface and increases impact protection a Rollover on the toe allows for easier shoulder transitions and better fit when using body armor a Compatible with Magpul ASAPA(R), ASAPA(R) QD, and other receiver-mount sling attachments a Rear - Integral push-button QD swivel sling mount accommodates up to 1.5" swivels (ambidextrous) a Rear/Bottom - 1.25" sling loops