Ruger Mark IV Target with a 5.5-inch bull barrel, adjustable rear sight, and the Mark IV's defining feature: a push-button takedown for effortless disassembly compared to previous generations. Type: Pistol Action: Semi-Automatic Caliber: .22 LR Capacity: 10 Year introduced: 2016, USA Weight: 36 oz Overall length: 9.75" Status: Active Intended use: Target, Plinking, Training