Ruger GP100 357 Magnum 4.2in Blued Revolver - 6 Rounds - Ruger GP100 revolvers are easy on the hand and budget. They boast solid steel sidewalls (no side-plates) and frame widths that are increased with extra steel in critical areas that support the barrel. The triple-locking cylinder is locked into the frame at the front, rear, and bottom for more positive alignment and dependable operation shot after shot. Disassembly of integrated subassemblies requires no special tools and allows for easy maintenance and assembly. Rugged, Reliable And Dependable Transfer Bar Mechanism Easy Takedown