The Magpul ACS-L (Adaptable Carbine Stock - Light) is a drop-in replacement buttstock for AR15/M4 carbines using mil-spec sized receiver extension tubes. A streamlined version of the ACS, the ACS-L utilizes the same center storage compartment and cheek weld but removes the battery tubes for a slimmer, lighter weight package. Made in U.S.A. FEATURES Mounts on mil-spec sized carbine receiver extension tube (not included) from manufacturers such as Colt, Armalite, S&W, LMT, and others (please see the note below) Sloping cheek weld provides a wide contact surface for user comfort Storage compartment in tail of stock with positive latching access door on right hand side Supplemental friction lock minimizes accuracy robbing wobble* Shielded release latch prevents snagging and accidental operation Premium chrome-silicon lock spring provides positive locking and long service life Replaceable 0.30" Rubber Butt-Pad offers an anti-slip surface and increases impact protection Compatible with Magpul ASAP®, ASAP® QD, and other receiver-mount sling attachments Sling Mounts Mid – Included reversible Sling Mount Kit – TYPE 3 fits up to 1.5" push-button swivels (swivel not included) Rear/Bottom – 1.00" sling loop ITARInternational Traffic in Arms Regulations Controlled Product