Strike Industries Dura Grip Pro Version Vertical Grip DG-L01 is built from durable, CNC machined aluminum and designed to last. For those that seek a bit more from their accessories, the metal design of the vertical grip is built to take some serious punishment right down to the steel mounting screw. The Dura-Grip PRO version features two switch pockets that accommodate a wide variety of pressure pad switches. If you have a flashlight, PEQ box, laser, or any other accessory that is dependent on a pressure switch, then the Strike Dura-Grip Professional Battery Pack Vertical Gun Grip is perfect for you. With built-in finger grooves and contour grooves, the Strike Industries gun grip gives you unsurpassed ergonomics with increased surface area and lighter weight. Strike Industries has designed the Dura-Grip to be convertible from full size to CQB configurations in just seconds. Both end caps are sealed with O-rings and are waterproof. Have optics or flashlights? The Dura Grip line accommodates up to three 123A batteries; the roof of the grip features a spring and the bottom cap has soft lining in order to keep the batteries safe and from discharging. For true professionals who use a wide range of optics and accessories, choose the StrikeIndustries DuraGrip Pro Version Waterproof Vertical Firearm Grip.