double-chamber gun

double annular combustion chamber

double-zone combustion chamber

double-double wargame

double-tap strike / double tap strike

double recoil gun

side-by-side double-barreled gun

L119 light gun (105 mm light gun)

submachine gun / sub-machine gun (SMG; smg)

gun control equipment / gun-control equipment (GCE)

duck gun (duck-gun)

flame gun / flaming gun

gun by gun

can-annular burner / combustion chamber

cartridge chamber

chamber proportion

decompression chamber

expansion chamber

floating chamber

gas chamber

hyperbaric / decompression chamber

powder chamber

propellant storage chamber

thrust chamber

breech block pivoted below the level of the chamber

fume chamber

thrust-chamber fuel purge

thrust-chamber oxidizer purge

anti-chamber

barrel chamber

brake chamber diaphragm

breech chamber

bullet chamber