This handy MGRIP1 Ergonomic CQB Grip attaches to your Picatinny rail near the magazine well, allowing you to use a shorter arc of movement during room clearing operations. Provides more control during firing while reducing fatigue. Finger grooves increase comfort and weapon performance. Captive thumb prevents losing the screw plate. Two removable pressure switch mounting covers. Plugged cap provides warterproof battery storage. Finned design reduces weight and dissipates heat. Lifetime warranty. Made in Israel.