The AR-STONER AR-15 Enhanced Build Kit contains everything needed to complete an AR-15 build, except the stripped lower. These enhanced kits Also included upgraded parts, such as an enhanced fire control group and Magpul furniture. The AR-STONER complete lower parts kits offers the rugged reliability of AR-Stoner, with the upgraded performance you expect from Magpul where it really matters. This winning combination makes this kit an economical way to build a complete rifle, less a stripped lower receiver.Similar in concept to the MOE-K, the Magpul MOE-K2 (Magpul Original Equipment) is a drop in upgrade for AR15/M4 pistol grips with a more vertical grip angle optimized for short LOP weapons that bring the primary hand in closer to the shooter's body. With an aggressive new texture for positive weapon control, compatibility with optional Storage Cores for gear stowage, and a unique backstrap design for proper trigger finger placement, the K2 brings modern styling and ergonomics to the...