45 ACP pistol features ergonomic grip, improved trigger pull, contoured slide, Picatinny accessory rail on Model # 6645, Ruger Camblock design, loaded chamber indicator, internal lock and mag. Ruger Manual Safety P-Series pistols offer the following features: ** A manual ambidextrous safety that, when engaged, prevents firing unless the lever is returned to the "fire" position. ** Ruger camblock design that reduces felt recoil and dissipates stress. ** High visibility front and rear sights. ** P345 pistols feature a new frame with checkered grip areas, front-strap, and back-strap, loaded chamber indicator, magazine disconnect, and internal lock. ** KP345PR model includes a Picatinny accessory rail. All P-Series pistols are designed to be easily maintained and can be field-stripped into five major subassemblies for cleaning, without the need for special tools. 602-315-4200