Ruger Mark IV, 22/45 Lite, Single Action, Semi-automatic, Polymer Frame Pistol, 22LR, 4.4 Threaded Barrel, Anodized Finish, Black, Checkered Grips, Adjustable Rear Sight, Ambidextrous Safety, 10 Rounds, 2 Magazines 43956 Combining reliability and accuracy with an attractive and updated style, the new Ruger Mark IV 22/45 Lite rimfire pistols have a custom pistol look without the custom price. Chambered for the popular .22 LR, this model is feature-rich and sport a 4.40" threaded cold-hammer forged barrel, adjustable sights, a Picatinny rail and an ambidextrous manual safety. Featuring a black receiver, black grip panels, gold trigger and a gold barrel for a look of understated elegance.