Ruger has long set the standard for reliable, affordable and accurate .22 LR handguns, beginning with the introduction of the Standard Pistol in 1949. Since then, the Standard Pistol has undergone a series of enhancements with the development of the Mark I, Mark II™, Mark III™ and now the Mark IV.™ The Mark IV™ maintains the classic look of the original but adds a simple, one-button takedown for quick and easy field stripping.  The popular Mark IV™ 22/45™ Lite now features a new anodized finish for 2018 - Green.  Additional features of the Lite model include a lightweight, ventilated, aerospace-grade aluminum receiver, and a comfortable, precision-molded polymer grip frame. This model is now also available with a non-threaded barrel.