Calciolo Moe Carbine Stock Mil Spec Magpul BlackDescription Details The MOE Stock Mil Spec Model (Magpul Original Equipment) is a drop in replacement buttstock for AR15 M16 carbines using mil spec sized receiver extension tubes. Designed for light, fast action the streamlined A frame profile avoids snagging and shields the release latch to prevent accidental activation. The Mil Spec Model includes a standard 0. 30" rubber butt pad which provides positive shoulder purchase to prevent slippage even