The PAC-LITE Holster is designed to meet the needs of Ruger Mark I, II, III, IV, and 22/45 pistol owners with versatility and durability in mind. Crafted with an open slot at the top and an open end, this holster accommodates optics, suppressors, or compensators, offering ambidextrous functionality and lightweight construction for optimal comfort and convenience. Low ride models allow the grip of the pistol to be in-line with your belt, and high rise have the grip of the pistol to sit about 3-4 inches higher. **Will NOT fit if you have a rail on the bottom side of your barrel**