Some more developments. There are three types of 40mm grenade fuse:
- Contact. This is the simplest type. It just explodes as soon as it hits the ground (or wall etc.). Very accurate
- Air burst. The grenade jumps up after hitting the ground, this can (in theory) do more damage, by hitting enemy hiding behind cover.
- Timed. The grenade explodes after a set time, allowing it to bounce and travel further. The disadvantage is that it unpredictable where it will detonate.