Magpul MAG404-GRY MOE Rifle Stock Fixed Black Synthetic for AR-15, M16, M4The 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.