Ruger Mark IV 22/45 Lite .22 LR 10+1 4.4" Stainless Threaded Barrel, Black Anodized Serrated Slide, Picatinny Rail, Black Anodized Polymer Frame, Black Checkered 1911-Style Grip The Ruger MK IV 22/45 Lite features one-button takedown for quick and easy field-stripping; precision-molded polymer grip frame with a serrated front strap and checkered backstrap; aluminum receiver; stainless steel threaded barrel; checkered, 1911-style grip panels; accurate sighting system features an adjustable rear sight and a factory-installed Picatinny rail; ambidextrous manual safety can be converted to left-side only with included washer; push-button magazine release on the left side of the frame. Includes: two 10 Round magazines.