The folding vertical grip with a push of a button you can change the angle of the grip to 4 different positions.Mounts onto weaver and picatinny type rails, ergonomic design for comfortable and secure grip and polymer construction for a light weight addition to your rifle, but with solid strength and reliability.*vertical grip not designed for pump shotguns.Type: Ergonomic GripModel: Folding Verticle GripFinish: BlackMaterial: PolymerColor: BlackHeight: 4.60"