Walther P99 Blowback CO2 Airsoft Pistol Blowback action Uses a 12-gram CO2 cartridge 15-round drop-free magazine Paddle-style mag release Fires 6mm airsoft BBs Up to 320 FPS with .20g airsoft BBs Built-in hop-up system Double-action only trigger operation Fixed front and rear sights Front Weaver accessory rail for lights or lasers