Ruger GP100 Match Champion 357 Magnum 4.2in Stainless Revolver - 6 Rounds Triple-locking contoured cylinder is locked into the frame at the front, rear and bottom for more positive alignment and dependable operation shot after shot and enables easy re-holstering. The ejector and chamber mouths have a light chamfer to aid loading. Grip frame design easily accommodates a wide variety of custom grips. Disassembly of integrated subassemblies requires no special tools and allows for easy maintenance and assembly. Transfer bar mechanism provides an unparalleled measure of security against accidental discharge. An adjustable rear sight and HiViz LiteWave fiber optic front sight allows for a fast and visible sight picture. The 4.2in barrel delivers lively handling for quick transition between targets and also features an 11deg target crown for competitive-level accuracy. Polished and optimized internals, a centering boss on the trigger, and centering shims on the hammer produce a smooth double-action trigger pull and a crisp and consistent let-off.