M621 cannon
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 20×102mm ammunition as the M61 Vulcan.
Also recorded as M621
M621 cannon
Tiraden · CC BY-SA 3.0
- Name
- M621
- Field
- autocannon
- Region
- France
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wikidata · Q3272564 · wikipedia · M621 cannon
In this article
Key facts
Key facts
• Name — M621 • Origin — France • Type — Automatic cannon • Is Ranged — yes • Designer — KNDS France • Manufacturer — KNDS France • Variants — see variants • Weight — 45.5 kg • Length — 2207 mm • Part Length — 1460 mm • Width — 202 mm (in mount) • Height — 245 mm (in mount) • Cartridge — 20×102mm • Caliber — 20mm • Action — Gas operated, delayed blowback • Rate — 800 rounds/min • Velocity — 1005 m/s (AP-T) 985 m/s (HEI and TP) • Feed — Open-link M12 belt
THL 20
THL 20
Turreted cannon for helicopters.
POD NC 621
POD NC 621
Cannon pod for helicopters and light aircraft.
ARX 20
ARX 20
Remotely controlled weapon station with M621 and a 7.62×51mm machinegun.
SH20
SH20
Door mounted cannon for helicopters.
CP 20
CP 20
Pintle-mounted cannon for vehicles and boats.
15A
15A
Cannon for naval ships.
NARWHAL
NARWHAL
As remote-controlled naval gun on the Nexter Narwhal 20A.
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- France
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The biographical narrative on this page is based on the Wikipedia article M621 cannon, revision 1342595651 (EN edition), by its contributors. VALÉORINE has edited that text and built its own documentary record around it. The reused material is available under CC BY-SA 4.0, and this page's reuse of it is offered under the same licence. Everything else on this page — the chronology, the holdings, the evidence, the plates and the connections — is VALÉORINE's own record. Sources and licences.
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The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 14 August 2026.
Elsewhere in Militaria
6,095 published records in this field, each with its sources named.
- M6 mineTerminology
- M60 105mm CartridgeTerminology
- M60 rifle grenadesTerminology
- M61 VulcanTerminology
- M67 grenadeTerminology
- M6C-210Terminology
- M7 bayonetTerminology
- M7 PriestTerminology
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