Ruger MK II w/FG RH Thumbrest Grp Fit: Ruger MKII and MKIII Features: Right Hand Thumb Rest Color: Black Hogue rubber grips are molded from durable synthetic rubber that is neither spongy nor tacky yet provides a soft recoil absorbing feel without affecting accuracy. This modern rubber requires a completely different molding process than ordinary neoprene, resulting in a much superior grip.