Cool equipment

[Project_Sardonicus]

I'm sure there have been multiple threads on this sort of thing, but this just popped up on my Youtube and I thought,
"Woe the project would definitely have this once it was invented!"

It's a 20mm grenade launcher designed to turn standard 20mm cannon rounds into a semi auto grenade launcher with an upto 1km range.

My only puzzle, is how the recoil managed so as not to break the shooter's shoulder?

But yeh I could picture most Commando v150s having one of these with a couple of empty clips stowed in the back.

https://www.youtube.com/watch?v=QHbqHx3TLBE