PISTOL: RUGER MODEL MARK IV 22/45 TACTICAL, SERIAL NUMBER 500229811, SEMI - AUTOMATIC, .22LR, BLACK (MATTE), CASE NOT INCLUDED, 4.5" Notes: (MISSING MAGAZINE) The Ruger Mark IV 22/45 Tactical is a semi-automatic rimfire pistol chambered in .22 LR. It combines the classic ergonomics and grip angle of a 1911 pistol with the rugged accuracy and modern tactical features of the Mark IV platform. Its defining feature is a simple, tool-free, one-button takedown mechanism that solves the historical field-stripping difficulty of previous Ruger rimfire models. Key Technical Specifications * Caliber: .22 Long Rifle (.22 LR) * Capacity: 10+1 rounds (comes standard with two 10-round magazines) * Barrel Length: 4.40 inches * Barrel Type: Cold hammer-forged, heavy bull barrel * Thread Pattern: 1/2"-28 TPI (factory-installed thread protector included) * Grip Frame: Injection-molded polymer with checkered, replaceable 1911-style grip panels * Sights: Fully adjustable rear iron sight; fixed front blade sight * Weight: 33.3 ounces * Overall Length: 8.50 inches * Height: 5.50 inches * Width: 1.22 inches * Twist Rate: 1:16" RH (6 grooves) Core Features * One-Button Takedown: A recessed button at the back of the frame allows the upper receiver to tilt up and lift off easily without any tools. * 1911 Ergonomics: Features a polymer grip frame mimicking the precise grip angle and control layout of a standard 1911, making it an excellent understudy training tool. * Optics & Accessory Rails: Features a factory-installed top Picatinny rail for red dot sights or scopes, and a bottom rail forward of the trigger guard for mounting lights or lasers. * Ambidextrous Manual Safety: The frame-mounted safety lever can be easily swapped to the left side or kept ambidextrous using an included washer. * Magazine Disconnect: Prevents the pistol from firing if the magazine is removed from the grip frame. * Easy Cleaning: A smoothly contoured internal bolt and a top-ejecting port ensure reliable cycling and effortless bore access when field-stripped.