The GLOCK 19 Gen4 pistol in 9 mm Luger offers great firepower while allowing to shoot quick and accurately. It is ideal for a more versatile role due to its reduced dimensions, without sacrificing all-important magazine capacity. The modular back strap system makes it possible to instantly customize its grip to accommodate any hand size. The reversible magazine catch makes it ideal for left and right-handed shooters. GLOCK 19 Gen4 (for sale).