A dumb idea for a recoilless springer

I see. I was confused.

I've often wondered why no one makes such a thing, even a cheap 10 pump bb gun. why couldn't they make it 100 pumps and the air is regulated for multiple shots without recharging?
Wasn't the nova liberty basically that? Or the seneca aspen? They have an on board pump but they're pcp guns. You pump them a few strokes and get a few shots. Rinse repeat.

Edit: I guess I should've finished reading the thread 🙃