It was the lone star cap firing spud gun. single chamber, one cartridge with a triangular cutter to take the potato pellet and a recess at the back that you could jam several paper caps into.
Yes it could 'take someones eye out with that' and if you used soft lead flashing and match heads you were definitely straying into the danger zone.
In the seventies every blazer inside pocket had one, today don't even think about it
The only better weapon was 6 feet of 15mm copper pipe and a carefully rolled ball of old half dried putty picked out of the window frame, if you learned the correct method of air delivery you could generate a seriously nasty smack into whatever you hit
"But we have our own dream and our own task. We are with Europe, but not of it. We are linked, but not comprised. We are interested and associated, but not absorbed."
Winston Churchill 1930