New 20x42 personal grenade launcher
I love HEI cutaways.

The proj. is the HEI from the 20x82 MG151 round which is used in the South African copy designated GA1.

the picture show the older case design
the actual casing is belted but the projectile is the same

It isn’t new - it’s been around for about a decade at least.

This is all the ammo types they have experimented with AFAIK:


…and this is a rather nice salt & pepper set I was given by the designer!