Sports South Exclusive. Ruger's GP100 revolver features a triple-locking cylinder that is locked into the frame at the front, rear and bottom for more positive alignment and dependable operation. Its patented transfer bar mechanism provides an unparalleled measure of security, while the integrated sub-assemblies allows for easy maintenance and assembly. The grip frame design easily accommodates a wide variety of custom grips. Grips Black Finger Groove Rubber Action dasa Sights Adj Front & Rear Caliber 357 Mag Capacity 6rd Hammer Style Exposed Barrel Finish Blued Barrel Length 5" Cylinder Finish Blued Barrel Length Range 5" to 5.99"