This over-the-counter CO2 replica of the GLOCK 19 is compact, with the unmistakable look of the original pistol and plenty of power. In spite of its relatively small length of 186 mm, it fires 4.5-mm steel BBs with a muzzle energy of up to 3 joules and weighs a hefty 717 g. Like the original, it has a metal slide and a real trigger blade safety.