Ruger Mark IV 22/45 .22LR Semi-automatic Pistol At long last, Ruger's outstanding .22 Pistol has been overhauled to offer simple, one-button takedown for quick and easy field-stripping. And let's be honest. Field-stripping the II and III wasa |to put it lightlya |a chore. Now, though, all you have to do is push the button on the back of the frame, and the upper receiver tilts right off. Easy as that. Other improvements include a redesigned trigger group and bolt stop, and the addition of an ambidextrous thumb safety, among a few others. Of course, in every other way, it feels and shoots like the Mark IIIa |and that's a very good thing. It still has a number of the hallmark features, like the internal cylindrical bolt construction, adjustable rear sight, and more, and it's just as accurate as ever. NEW simple push-button takedown for easy field-stripping and cleaning 5.5 inch bull barrel delivers match accuracy Redesigned trigger group and bolt stop New ambidextrous thumb safety Drop-free magazine design Precision-adjustable rear sight and fixed front sight Drilled and tapped receiver accepts a Weaver- or Picatinny-style rail Internal cylindrical bolt construction ensures permanent alignment and higher accuracy Manual safety positively locks the sear when applied Magazine disconnecter prevents discharge when mag is out Includes (2) 10-rd. magazines Order today!