The Magpul Original Equipment Stock is a drop-in replacement buttstock for AR-15/M16 or AR-10 carbines using Mil-Spec receiver extensions. Designed for light, fast action streamlined A-frame profile avoids snagging and shields the release latch to prevent accidental activation. Includes a standard 0.30" thick rubber butt-pad which provides positive shoulder purchase to prevent slippage even with body armour.