Ruger 57, Double Action Only, Semi-automatic, Polymer Frame Pistol, Full Size, 5.7X28MM, 4.94 Barrel, Black Oxide Finish, Fiber Optic Front and Adjustable Rear Sights, Ambidextrous Manual Safety, 10 Rounds, 2 Magazines, Ambidextrous 16402 The Ruger 57 utilizes Ruger's safe, reliable and proven Secure Action fire-control system that combines a protected internal hammer with a bladed-safety trigger. The trigger has a short, smooth pull, clean break and positive reset. Impressive ergonomics include an easy trigger reach, 1911-style ambidextrous manual safety, robust slide release and reversible magazine release latch. The alloy steel barrel features a black nitride treatment for wear resistance.