- Gardner Two Barrel Machine gun
Gardner Two-Barrel Machine Gun, on cone mounting, for Naval use. Weight of gun 103 lbs; of mounting 153 lbs. ; calibre .045 ; rapidity of fire, maximum, 680 shots per minute - Gardner five barrel machine gun
Gardner Five-Barrel Machine Gun, on portable tripod, adapted for Naval use. Weight of gun 235 lbs; of mounting 134 lbs. ; calibre .045 ; rapidity of fire, maximum, 1200 shots per minute