M621 | |
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Type | Automatic cannon |
Place of origin | France |
Production history | |
Designer | GIAT Industries |
Manufacturer | Nexter Systems |
Variants | see variants |
Specifications | |
Mass | 45.5 kg (100.31 lb) |
Length | 2,207 mm (86.9 in) |
Barrel length | 1,460 mm (57 in) |
Width | 202 mm (8.0 in) (in mount) |
Height | 245 mm (9.6 in) (in mount) |
Cartridge | 20×102mm |
Caliber | 20mm |
Action | Gas operated, delayed blowback |
Rate of fire | 800 rounds/min |
Muzzle velocity | 1,005 m/s (3,297 ft/s) (AP-T) 985 m/s (3,231.6 ft/s) (HEI and TP) |
Feed system | Open-link M12 belt |
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.