Hogue Rubber Grip with Finger Grooves, Fits Ruger Mark IV, Black 79000 Hogue rubber grips are molded from a durable synthetic rubber that is not spongy or tacky, but gives that soft recoil-absorbing feel, without affecting accuracy. This modern rubber requires a completely different molding process than ordinary neoprene and results in a much superior grip. Precision fit for the Ruger Mark IV