Umarex Glock G17 Gen5 C02 Half Blowback Airsoft Pistol with 5xCO2 Tanks and Pack of 1000 6mm Plastic BBs Bundle Description Contact Us Buy with Confidence This GLOCK 17 Gen5 6mm Airsoft BB pistol fires with a crisp, fast cycle. This Gen 5 GLOCK Airsoft BB pistol features the latest power system valve which provides incredible recoil impulse, easy to adjust hop-up, and efficient use of the CO2! Key Features: