Built around the design parameter of Glock's subcompact models the Glock 39 melds deep concealment size with the power and accuracy of the .45 G.A.P. cartridge. This pistol can be considered the Glock for the master shooter who wants perfection in a small, powerful package. Glock's revolutionary Safe Action System, polymer construction, a hammer-forged barrel, and a hard-as-diamond finish are given new life with the unquestioned efficiency of the .45 G.A.P. ammunition. Internally, the Gen4 Glock dual recoil spring assembly substantially increases the life of the system. This pistol features a factory-installed locking key system that prevents the gun from being fired when engaged. In addition to the key, the handgun comes with two 6-round magazines and the original factory hard case. Its grips, metal, and bore are all in very good condition.