title: M621 cannon
text: # M621 cannon
  
  The M621 is a 20 mm automatic cannon of French design, developed by Nexter as on-board armament for armored vehicles, aircraft, helicopters and small coastal vessels of the French Navy.
  
  ## Variants
  
  ### THL 20
  
  Turreted cannon for helicopters.
  
  ### POD NC 621
  
  Cannon pod for helicopters and light aircraft.
  
  ### ARX 20
  
  Remotely controlled weapon station with M621 and a 7.62×51mm machinegun.
  
  ### SH20
  
  Door mounted cannon for helicopters.
  
  ### CP 20
  
  Pintle-mounted cannon for vehicles and boats.
  
  ### 15A
  
  Cannon for naval ships.
  
  ### NARWHAL
  
  As remote-controlled naval gun on the Nexter Narwhal 20A.
  
  