Stun grenade having an adjustable switch mechanism to connect different effect chambers simultaneously to a delay set

A stun grenade comprising:

• a detonator head;
• a housing that receives the detonator head, the housing comprising chambers each having an effect charge therein and the chambers each having at least one breakthrough bore;
• a rocker lever located on the detonator head;
• a securing split pin to secure the rocker lever;
• and
• a switch mechanism arranged in the housing which, via rotational adjustment, functionally connects different chambers substantially simultaneously to a delay set,
• wherein the switch mechanism is a hollow cylindrical tube having the delay set disposed therein, the hollow cylindrical tube having radially extending bores and at least one spiral groove that is recessed in an exterior surface of the cylindrical hollow tube, and
• wherein a first one of the bores is provided at a first end of the at least one spiral groove and a second one of the bores is provided at a second end of the at least one spiral groove, such that in an adjustment position of the switch mechanism, the at least one breakthrough bore of each of at least two of the chambers are fluidly connected together with the first one of the bores, the second one of the bores and the at least one spiral groove.