Walther P99 Blowback CO2 Airsoft Pistol 6mm
20g BB, results averaged between 280-300 FPS.Using a . Walther P99 airsoft pistol Semi-auto Uses 12-gram CO2 cartridge 15-rd removable mag Blowback Double-action only Hop-up system, built-in Front Weaver accessory rail We measured the velocity of the Walther P99 Blowback CO2 Airsoft pistol with a .