12 x Sound Grenade Bottle Shells, 1x Main core & 2x Safety Pins .

-New release sound effect airsoft simulation grenade by HAKKOTSU (Hong Kong).
-Powered by Co2 the Hakkatsu Thunder B grenade is easily the loudest and offer more realistic .
-Like the real one and features a pin and spoon operating mechanism.
-Simple design and provides very little areas for failure .
-The entire grenade is constructed very well, the pin, spoon and cartridge assembly are all made out of a very tough metal .
-Will not dent or deform after numerous throws of the grenade .
-Since thunder B does not contain any gun powders, which means you don't have to worry about the fire harm when it blew up. These insure the safety of the user. However, you still have to beware of its deafening “BANG” which may surprise you.
-Perfect for bombing demonstration during military training.
-Work as BB bottle when Gas tank not inserted.

Weight – 647g(Hole Package)
Built material - Polymer /Metal