The Hogue AR15 M16 Rubber Grip Beavertail w Finger Grooves Grey features gentle palm swells that fit comfortably in your hand. The finger grooves naturally position fingers for optimal grip. It is textured with Hogue's famous cobblestone pattern for an efficient non-slip, non-irritating stippled grip. The beavertail cushions the hand on recoil and offers increased hand comfort higher on the frame. It is made from long-lasting, durable, thermoplastic elastomer that ages gracefully for years of service and is virtually impervious to all oils and solvents associated with firearms.