Umarex Glock 17 Gen5 4.5mm CO2 Airgun

The CO2-operated GLOCK 17 Gen5 is an airgun with powerful blowback. It fires steel BBs in 4.5 mm and fits in popular holsters like the Safariland or Blackhawk. Other features include a metal slide, a single-action and double-action trigger and an all-in-one magazine that holds 18 steel BBs along with the CO2 capsule.