Gadget: Little Nellie
Miniature auto-gyro featuring: dual flame guns pointed aft, dual rocket launchers, dual smoke guns pointed aft, 2 heat seeking missiles, 2 fixed machine guns set to 100 yards, aerial mines.
Little Nellie is probably the second most famous Bond gadget, after the Aston Martin DB-5. In a wonderfully filmed and choreographed battle scene, 007 uses her to dogfight four heavily armed black helicopters. As the radio ads for the film speculate, "they haven't got a chance."
In the battle, she uses all her major weapons and destroys all four helicopters that are pursuing, including a highly improbable maneuver in which he drops mines on a helicopter from above.