The UPG16 Interchangeable Pistol Grip is a drop-in update for the standard AR15/M4/M16 single handed grip. The ergonomic, six-piece rubber grip, consolidates an anti-slip texturing with interchangeable front and back straps. The one-piece fortified polymer development, gives integrity and allows customizing grips, to fit all hand sizes for maximum comfort. Features Include: Interchangeable pistol grip replaces the original AR/M4/M16 stock grip, Provides increased control and decreases any fatigue during firing, Designed easily with finger grooves & palm swell for increased powerful gripping, Equipped with a storage compartment for small items, Minimizes risk of slippage when wet. Sell Unit Each.