The MOE Rifle Stock (Magpul Original Equipment) is a drop-in replacement for AR15/M16 A1 and A2 rifle stocks utilizing the standard rifle-length receiver extension (buffer tube). Designed as a basic upgrade, the stock features integral 1.25" sling loop, optional dual-side front and rear QD mounting points, replaceable anti-slip rubberized butt-pad, and internal storage compartment accessible through the rear storage door. Made in U.S.A. Features: Mounts to rifle-length receiver extension tube without A2 spacer (not included) Sloping cheek weld combines a slim profile with user comfort Overall shape provides for offhand hold options Rubber butt-pad provides positive shoulder purchase to prevent slippage Large storage compartment easily accessible behind hinged butt-plate Knockout bosses on the bottom allow for the addition of an optional accessory rail Sling Mounts Bottom Rear - 1.25" Sling loop Front/Rear - Optional Sling Mounts fit up to 1.5" push-button QD swivels NOTE: The MOE Rifle Stock is a direct replacement for an A1 or A2 fixed stock. Fitting to a carbine with a collapsible stock will require a rifle-length receiver extension tube, rifle buffer and spring (not included).