Compatibility: For Umarex GLOCK G17 GEN4 Series Airsoft Co2 Pistols by KWC Only
Velocity: 320 FPS / 0.95 Joules (Measured with 0.20g BBs and 12g Co2 Cartridge)
Capacity: 17 rounds
Gas Type: Co2
The Umarex 17rd GLOCK 17 Gen4 Co2 spare airsoft magazine by KWC is made from heavyweight aluminum, giving a hefty feel to the G17 GEN4 airsoft pistol. This Co2 Umarex magazine has a high-efficiency internal gas system providing excellent FPS output, and reinforced valves and seals for optimal gas retention. We recommend using Valken 12g Co2 Cartridges with this gas pistol magazine.