The EVG Ergonomic Vertical Grip is designed for the Picatinny rail handguard. The polymer and rubber foregrip, is modeled with checkered finger grooves and rubberized, skeleton backstrap. The EVG gives a natural feel with controlled operation and comfortable carry. Features Include: Picatinny rail prevents any loose movement, Modeled with a finger groove with added control, No assembly required - storage compartment holds batteries, and firing items.