Infantry Weapons

20mm GIAT M693 autocannon

The GIAT M693 is a French 20 mm autocannon developed for vehicle armament and anti-aircraft use. Weaponsystems.net identifies it as a M621-derived 20x139mm NATO weapon with delayed blowback, dual-belt feed, and service on platforms such as the AMX-10P and the navalized 20F2 family.

20mm GIAT M693 autocannon, French 20 mm autocannon chambered for 20x139mm NATO rounds, Infantry Weapons

Image source: Weaponsystems.net 20mm Giat M693

Profile

Origin: France
Built by: GIAT
Type: French 20 mm autocannon chambered for 20x139mm NATO rounds
Service note: Developed in the 1960s; in service from the 1970s
Produced: 1970s-present
Variants: Modèle F2, 20F2, GI2
Developed from: 20mm M621 autocannon

NATO autocannon vehicle-mountedanti-aircraftnaval

Specifications

Caliber: 20x139mm NATO
Feed system: Dual belt feed
Operation: Delayed blowback
Rate of fire: About 900 rounds per minute
Weight: About 70.5 kg complete

Service And Conflict Use

Service History

In service: Developed in the 1960s for vehicle armament and anti-aircraft roles; later adapted into navalized F2 service use.
Used by: French Army, French Navy

Fired By Platforms

The M693 was developed for vehicle armament and anti-aircraft use, and one documented mounting is the French AMX-10P tracked amphibious infantry fighting vehicle.

Firing weapon

Weapon type

Firing evidence

Tracked amphibious infantry fighting vehicle

Weaponsystems.net says the M693 is used as the main armament of the French AMX-10P and is chambered for 20x139mm NATO rounds.

Sources: Weaponsystems.net 20mm Giat M693

20mm GIAT M693 autocannon Images

20mm GIAT M693 autocannon, French 20 mm autocannon chambered for 20x139mm NATO rounds, Infantry Weapons - view 1 — Source: Weaponsystems.net 20mm Giat M693

20mm GIAT M693 autocannon, French 20 mm autocannon chambered for 20x139mm NATO rounds, Infantry Weapons - view 2 — Source: Weaponsystems.net 20mm Giat M693

20mm GIAT M693 autocannon, French 20 mm autocannon chambered for 20x139mm NATO rounds, Infantry Weapons - view 3 — Source: Weaponsystems.net 20mm Giat M693

20mm GIAT M693 autocannon, French 20 mm autocannon chambered for 20x139mm NATO rounds, Infantry Weapons - view 4 — Source: Weaponsystems.net 20mm Giat M693

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Sources

Weaponsystems.net 20mm Giat M693Publisher: Weaponsystems.net | Note: Supports the M693's French origin, autocannon type, M621-derived design, 20x139mm NATO chambering, delayed-blowback mechanism, dual-belt feed, platform use, and image provenance shown on the page. | Accessed: 2026-06-23 GIAT Nexter 20F2 20mm machine gun systemPublisher: Seaforces.org | Note: Supports the navalized F2 context, use by the French Navy, and the 20x139mm mount details for the M693 family. | Accessed: 2026-06-23