Purely mechanically spring-operated airsoft grenade. The GBR can be filled with approx. 130 BB. After removal of the cotter pin, the grenade will be triggered when in contact with the ground.
For filling, only the bottom cover is screwed on. Since it does not have to be filled with gas and works only with spring pressure, this grenade is less than 0.5 Joule and thus free from 14 years.
