When used as a rifle grenade the fuse activated automatically, as the plunger was pushed in against a weak creep spring by the force of the launch.
2.
Detonation occurred on impact, when a striker in the tail of the grenade overcame the resistance of a creep spring and was thrown forward into a stab detonator.
3.
A weak creep spring inside the grenade firing mechanism allowed the firing pin to be thrown back upon launching, igniting a time fuse with a 7-8 second delay.
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