The M621 is a 20 mm automatic cannon of French design, developed by KNDS France as on-board armament for armored vehicles, aircraft, helicopters and small coastal vessels of the French Navy. It fires the same 20ÃÂ102mm ammunition as the M61 Vulcan.
Turreted cannon for helicopters.
Cannon pod for helicopters and light aircraft.
Remotely controlled weapon station with M621 and a 7.62ÃÂ51mm machinegun.
Door mounted cannon for helicopters.
Pintle-mounted cannon for vehicles and boats.
Cannon for naval ships.
As remote-controlled naval gun on the Nexter Narwhal 20A.