Hmm. I think I see a common misconception appearing.
Cartridge-firing arms do *not* need "modification" to fire without an atmosphere. Cartridges are sealed units,and both black powder and nitrocellulose provide their own "oxidizer", just like rocket fuel. (In the case of black powder, it's sulfur dioxide, AKA "saltpetre"; I don't remember which chemical provides the same functionality for nitrocellulose offhand.)
The only thing modern firearms need to fire in space is a suffciently low-temp lubricant; Break Free CLP will work in most temperaure ranges.
Handling recoil, on the other tentacle, is a non-trivial problem. Best bet is to have your gun mounted or anchored to something *much* larger than the bullet.
The scene in Firefly where Jayne pus his beloved machinegun/grenade launcher in a spacesuit so it will have atmo to fire? Completely bogus.
Of course, that doesn't mean unscrupulous gun shops don't have some purely cosmetic mods to sell to 'Dane tourists, mind you...*evil grin*
(edited to fix spelling of "sulfur")
Cartridge-firing arms do *not* need "modification" to fire without an atmosphere. Cartridges are sealed units,and both black powder and nitrocellulose provide their own "oxidizer", just like rocket fuel. (In the case of black powder, it's sulfur dioxide, AKA "saltpetre"; I don't remember which chemical provides the same functionality for nitrocellulose offhand.)
The only thing modern firearms need to fire in space is a suffciently low-temp lubricant; Break Free CLP will work in most temperaure ranges.
Handling recoil, on the other tentacle, is a non-trivial problem. Best bet is to have your gun mounted or anchored to something *much* larger than the bullet.
The scene in Firefly where Jayne pus his beloved machinegun/grenade launcher in a spacesuit so it will have atmo to fire? Completely bogus.
Of course, that doesn't mean unscrupulous gun shops don't have some purely cosmetic mods to sell to 'Dane tourists, mind you...*evil grin*
(edited to fix spelling of "sulfur")