The Mako Group Tactical Folding Grip transforms a horizontal grip to vertical grip for different shooting applications. In the horizontal position just push grip down to lock in vertical position. Press button to fold back. It is designed to mount on Picatinny or Weaver rail. It has a safety extension to prevent slipping of hand when shooting with handgun. It is made of MIL-SPEC reinforced polymer composite. No gunsmithing is required.