Hakkotsu Thunder B CO2 Grenade Core Set Rail Interface Systems Picture may vary from what

Picture may vary from what you receive

FPS 394 w/

Measured with

It's only for stock Marui made cylinders

Hakkotsu Thunder B CO2 Grenade Core Set Rail Interface Systems Picture may vary from whatA Thunder B is an Airsoft simulation grenade that emits noise. It holds a standard 12 gram CO2 cartridge in a fully sealed compartment. Upon pulling the pin, the fire lever, or spoon, snaps down puncturing the CO2 cartridge and starts releasing the pressure from the cartridge until the shell breaks due to air pressure inside the shell resulting in a loud pop sound. The Thunder B Spare Core is perfect as a replacement set and also allows you to have