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.

M621
TypeAutomatic cannon
Place of originFrance
Production history
DesignerGIAT Industries
ManufacturerNexter Systems
Variantssee variants
Specifications
Mass45.5 kg (100.31 lb)
Length2,207 mm (86.9 in)
Width202 mm (8.0 in) (in mount)
Height245 mm (9.6 in) (in mount)

Cartridge20×102mm
Caliber20mm
ActionBlowback operated
Rate of fire750 rounds/min
Muzzle velocity1,005 m/s (3,297 ft/s) (AP-T)
985 m/s (3,231.6 ft/s) (HEI and TP)
Feed systemOpen-link M12 belt

Variants

THL 20

Turreted cannon for helicopters.[1]

POD NC 621

Cannon pod for helicopters and light aircraft.[2]

ARX 20

Remotely controlled weapon station with M621 and a 7.62×51mm machinegun.

SH20

Door mounted cannon for helicopters.[3]

CP 20

Pintle-mounted cannon for vehicles and boats.[4]

15A

Cannon for naval ships.[5]

NARWHAL

Remote-controlled naval gun.[6]

See also

References

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