The GLOCK 19 in 9mm Luger is ideal for a versatile role thanks to its reduced dimensions when compared to the standard sized option. In addition to its use as a conventional service pistol, it is ideal for use as a backup weapon or for concealed carry purpose. Glock Gen 3 pistols feature several design changes from previous models. Changes include grip finger grooves, thumb rest grooves, a universal accessory rail, and revised extractor to function as a loaded chamber indicator. Gen 3s feature a single recoil spring.