The MOE SL Stock Mil-Spec Model (MOE Slim Line) is a drop-in replacement buttstock for AR15/M4 carbines using Mil-Spec sized receiver extension tubes. Designed for the modern battlefield, the sleek profile, dual-side release latches, rolled toe, and angled rubber butt-pad are optimized for use with body armor or modular gear and provides for efficient shoulder transitions. Made in the USA. Product Features Improved Cheek Weld with a Sloped Comb Profile A more sloping cheek weld combines a slim profile with functional support Rollover Toe to Fit Your Gear Rollover on the toe allows for easier shoulder transitions and better fit when using body armor Easy Adjustment, No Snags Dual-side release latch provides easy adjustment while remaining anti-snag Angled Rubber Butt Pad Rubber butt-pad offers an anti-slip surface and increases impact protection Compatibility Mounts on Mil-Spec sized carbine receiver extension tube (not included) from manufacturers such as Colt, LMT, Ruger, S&W, SIG, and others Secure Fit Internal anti-rattle feature minimizes wobble on receiver extension tube Sling Point Variety Compatible with Magpul ASAP , ASAP QD, and other receiver-mount sling attachments