The Glock 34 Gen4, in 9×19, introduces revolutionary design changes to the “Tactical/Practical” Glock designed to be the same overall length as the Government Model 1911 pistols. Internally, the Glock dual recoil spring assembly substantially increases the life of the system. A reversible enlarged magazine catch, changeable in seconds, accommodates left or right-handed operators. The surface of the frame employs the scientifically designed, real-world-tested, Gen4 rough textured technology. The modular backstrap design lets you instantly customize its grip to adapt to an individual shooter’s hand size.