Shooters demand the best. Tactical Solutions Black Dog Mag's Ruger MK Series Low Ride Ambi Holster is the best. The HMK-01 is designed to fit the Ruger Mark Series (MK-I, MK-II, MK-III, and 22/45) .22LR pistols with or without an optic. Black Dog’s Black Max HMK-01 Low Ride Holster offers an adjustable retention for the various versions of the Mark Series pistols as well as a reversible design for left and right handed shooters. Will accommodated up to a 2 inch belt.