Includes: Picatinny Fore Grip, Allen wrench Materials: Polymer Compatibility: Picatinny rails Weight: 4 oz Length: 2.3 in Height: 4.8 in Color: Black Warranty: Lifetime he Monstrum Tactical GP23 is a lightweight vertical front grip for use with AR-15s, tactical rifles, or shotguns. It mounts beneath the barrel of any Picatinny/Weaver rail equipped rifle or shotgun, providing for well balanced barrel control and improved handle. Hollow on the inside, the grip also serves as a storage compartment accessible via the removable base. Molded from lightweight industrial polymer, it weighs only 3 ounces with a solid, comfortable gripping surface. Available in Black