Designed for 1-button takedown, the Ruger Mark IV 22/45 .22 LR Steel Alloy Pistol is crafted with a steel-alloy receiver that lifts up and off the frame tool free, a 5.5-inch bull barrel with fixed and adjustable sights and a checkered synthetic grip. It's drilled and tapped to accept Weaver- or Picatinny-style optic rails (sold separately). Ambidextrous safety. Includes two 10-round magazines.