The surface of the frame is the new Gen4 Rough Textured Frame-scientifically designed, real world tested. Internally, the new GLOCK dual recoil spring assembly substantially increases the life of the system. A reversible magazine ctach, changeable in seconds, accommodates left-or right-handed operators. The GLOCK 23 in caliber .40 S&W. Because of its unsurpassed reliability, above-average magazine capacity of 13 cartridges in the standard magazine and its low weight, it is trusted by law enforcement officers in their daily duties throughout the world. It is safe, easy and quick to use through the revolutionary “Safe Action” trigger system.