The 22/45 adapts the Mark IV action to a polymer frame with a 1911-style grip angle (45 degrees) and 1911-compatible grip dimensions, providing a .22 LR practice platform dimensionally similar to a 1911 .45 ACP. The trigger, grip angle, and manual safety location mirror the 1911, making it the preferred .22 LR trainer for 1911 users. Type: Pistol Action: Semi-Automatic Caliber: .22 LR Capacity: 10 Year introduced: 2016, USA Weight: 28 oz Overall length: 8.5" Status: Active Intended use: Training, 1911 Practice, Plinking