reread post #806
is this evidence of cognitive decline?
God, I'm snarky tonite
You originally
replied to my post of the video about the Girandoni Air Rifle stating that airguns would not work in space since space doesn't have air.
I pointed out that it could work in space since it had a pressurized air tank, but it could be hard to work the action. Since the air tank is removable in interchangeable with spare tanks commonly carried in a back pack that was part of the accessories that came with the air gun, you could indeed
carry compressed air in a back pack as
@hardroc77 said. In
post #806 you said cartridges with explosive propellant are smaller and less massive. Conventional firearms are good in space, but recoilless rifles and rockets would be best since they have little to no recoil to move you and throw your aim off. I mentioned the Gyrojet gun in
post #818, it would be a great gun in space if you modified it to make it more reliable and accurate which could be done easy enough. I would go with a riffled barrel to stabilize the round, which would make the round simpler and cheaper to produce vs using precision machined vectored thrust nozzles to spin stabilize the round like in the original Gyrojet round. I would give it a propellant charge like a recoilless rifle to propel it through the rifling in the barrel and get it up to a lethal muzzle velocity since the original Gyrojet wasn't lethal at very short ranges since it had to accelerate.