Hand grenade for launching BB bullets

A hand grenade for launching BB bullets comprising:

• two half shells threadedly secured together wherein the half shells each comprise a spiral bullet storage on an inner surface with a plurality of BB bullets disposed therein and one of the half shells further comprises a discharge opening;
• and
• a mechanism disposed in the assembled half shells and comprising a hollow, cylindrical base including a recess in a bottom end thereof, an air passage in fluid communication with one of the bullet storages, and a valve at an inner end of the air passage and disposed in the recess;
• a steel ball on the recess to block the valve;
• a pressing assembly including a bottom disc urging against the steel ball, a hollow cylinder extending upward from a center of the bottom disc, a magnet in a bottom end of the hollow cylinder, a rod having a lower portion in the hollow cylinder to engage with the magnet, and a pin disposed through the hollow cylinder and the rod to fasten the hollow cylinder and the rod together;
• an intermediate, hollow, cylindrical member threadedly secured to the hollow, cylindrical base;
• a cup-shaped cap threadedly secured to the cylindrical member and including two opposing projections on an inner surface, a well, and a through hole through a bottom of the well with an upper portion of the rod passing through;
• and a switch including a handle on a top and two opposing protrusions disposed under the projections respectively;
• wherein the upper portion of the rod is secured to the switch, the cylindrical member is filled with pressurized air, and the magnet attracts the steel ball in a position blocking the valve.