Munitions

20 mm gun pod

Also known as
  • NC621
  • NC 621
  • NC-621
  • POD NC621
  • NC621 POD
  • 20M621 pod
  • 20M621 cannon pod
  • Nexter NC621
  • Nexter 20 mm gun pod

The NC621 is a French jettisonable 20 mm aircraft gun pod built by KNDS France around the gas-operated 20M621 cannon. KNDS describes it as a multi-platform pod for helicopters, light aircraft, and drones, with 180 rounds of 20x102 mm NATO ammunition, a 750-round-per-minute firing rate, link-and-case recovery for aircraft integration, and 14-inch NATO attachment points.

20 mm gun pod, Aircraft gun pod, Munitions
Image source: NC621 | KNDS Group
Profile / Specs

Profile

Origin
France
Built by
KNDS France
Type
Aircraft gun pod
Service note
Modern

Specifications

Caliber
20x102 mm NATO
Cannon
20M621 gas-operated cannon
Ammunition capacity
180 rounds
Ammunition types
TP, TP-T, HEI, HEI-T, AP-T listed by KNDS for the NC621 pod
Rate of fire
750 rounds/min
Weight
174 kg with 180 rounds
Diameter
398 mm
Mounting
Jettisonable pod with NATO standard 14-inch attachment points
Average recoil force
250 daN
Power supply
28 V
Effective range
Up to 2,000 m
Carrier Aircraft

Official and specialist references document the NC621, or 20 mm gun-pod carriage, across helicopter and light-attack aircraft integrations. These links describe compatibility or integration, not independent conflict use by the pod.

CarrierCarrier typeCarriage evidence
M-346, Advanced jet trainer / lead-in fighter trainer, Aircraft & UAVsM-346Advanced jet trainer and light-combat aircraft

KNDS says Leonardo and Nexter launched a program to integrate a new 20 mm cannon pod on the M-346FA, including link-and-case recovery work for the aircraft.

Sources: M-346FA gun pod agreement | KNDS Group

Super Puma combat support helicopter, Twin-engine medium-lift utility helicopter, Aircraft & UAVsSuper Puma combat support helicopterH215M/H225M Super Puma family helicopter

Airbus describes HForce as fitting military H125M, H145M, and H225M helicopters, while KNDS lists Caracal H225M among NC621-compatible Airbus Helicopters platforms.

Sources: HForce | Airbus, NC621 | KNDS Group

Black Hawk helicopter, Medium-lift military utility helicopter family, Aircraft & UAVsBlack Hawk helicopterUtility helicopter

KNDS lists the UH-60 Black Hawk among Sikorsky platforms in the NC621 compatibility table.

Sources: NC621 | KNDS Group

AW-109, Light twin-engine attack and utility helicopter, Aircraft & UAVsAW-109Light utility helicopter

KNDS lists the A109 among Leonardo Helicopters platforms in the NC621 compatibility table.

Sources: NC621 | KNDS Group

L-159 ALCA, Light attack aircraft / advanced trainer, Aircraft & UAVsL-159 ALCALight combat aircraft

KNDS lists the Aero Vodochody L-159 among NC621-compatible aircraft.

Sources: NC621 | KNDS Group

Soko Gazelle, Light attack helicopter / armed helicopter, Aircraft & UAVsSoko GazelleLight helicopter

KNDS lists the Gazelle among Airbus Helicopters platforms compatible with the NC621 pod.

Sources: NC621 | KNDS Group

AIDC AT-3/T-5 Brave Eagle, Advanced jet trainer and light attack aircraft family, Aircraft & UAVsAIDC AT-3/T-5 Brave EagleAdvanced jet trainer and light strike aircraft

TaiwanAirPower lists 20 mm gun pods among the AT-3's carried stores; the source does not identify the NC621 specifically.

Sources: AIDC AT-3 weapons list | TaiwanAirPower

Compatibility versus conflict use

The carrier list documents compatible or listed aircraft, but no source found in this pass directly ties the NC621 pod to a named armed conflict. The record therefore remains relationship-only.

Sources: NC621 | KNDS Group, HForce | Airbus, M-346FA gun pod agreement | KNDS Group

Pod, Gun, and Carrier Context

The NC621 page is kept as a component record because current sources support platform compatibility and integration context, but not a direct, named-conflict use row for the pod itself.

AreaSourced detailWhy it matters
Gun coreKNDS identifies the pod weapon as the 20M621, a gas-operated 20x102 mm cannon with electrical priming and 750 rounds/min average firing rate.The page can separate the pod from generic 20 mm aircraft stores and explain the cannon family inside the container.
Aircraft integrationThe NC621 is jettisonable, uses NATO 14-inch attachment points, and is described with link-and-case recovery in the M-346FA integration program.These details explain why pod integration is more than simply hanging a cannon beneath a pylon.
Carrier evidenceKNDS lists helicopter and light-aircraft compatibility; Airbus documents HForce use on H125M, H145M, and H225M, and Leonardo/Nexter document the M-346FA integration effort.Carrier links are shown as platform relationships rather than conflict claims.

Source-backed context from KNDS NC621 and 20M621 product pages, Airbus HForce material, and the KNDS/Leonardo M-346FA announcement.

Timeline

20 mm gun pod Key Events

  1. H145M HForce firing campaign includes NC621

    Airbus reported an HForce ballistic development test on an H145M in Hungary that included the Nexter NC621 cannon pod alongside machine-gun pods, unguided rockets, an electro-optical sensor, and helmet sighting.

    Sources: HForce-equipped H145M firing campaign | Airbus

  2. M-346FA gun-pod integration program announced

    Leonardo and Nexter announced a joint development effort to integrate a new 20 mm cannon pod on the M-346FA after feasibility work on link-and-case recovery for the aircraft.

    Sources: M-346FA gun pod agreement | KNDS Group

Related Weapon Systems
Narwhal 20 mm remote-controlled turret, 20 mm naval remote weapon station, Naval SystemsNaval SystemsNarwhal 20 mm remote-controlled turret20 mm naval remote weapon stationNarwhal is KNDS France's remotely operated 20 mm naval turret family for close-in ship self-defense and maritime-security roles. Official KNDS and MBDA material describes it as a lightweight day/night system for platforms from small patrol boats to frigates, with 20A and 20B ammunition-standard configurations, more than 180 systems in service, demonstrated Akeron MP missile pods, and a future 30 mm growth direction.
20mm GIAT M693 autocannon, French 20 mm autocannon chambered for 20x139mm NATO rounds, Infantry WeaponsInfantry Weapons20mm GIAT M693 autocannonFrench 20 mm autocannon chambered for 20x139mm NATO roundsThe GIAT M693 is a French 20 mm autocannon family developed for armored-vehicle, anti-aircraft, and naval mount applications. Specialist references trace the gun to the earlier M621 mechanism but a larger 20x139 mm NATO cartridge, dual-belt feed, and about 900 rounds per minute. The catalog keeps it as a relationship-only component page because public sources most clearly document the M693 through host platforms and derivatives: AMX-10P vehicles, naval 20F2 mounts, Narwhal 20B turrets, and the South African GI2 production variant.
20mm M197 rotary cannon, 20 mm three-barrel externally powered Gatling aircraft cannon, Aircraft & UAVsAircraft & UAVs20mm M197 rotary cannon20 mm three-barrel externally powered Gatling aircraft cannonThe 20mm M197 is a lightweight three-barrel Gatling aircraft cannon derived from the M61A1 Vulcan family for helicopter, light-aircraft, naval, turret, pod, and pintle installations. General Dynamics Ordnance and Tactical Systems markets the current M-197 and lists it on Marine Corps AH-1J, AH-1T, AH-1W, and AH-1Z aircraft, while FAS, DVIDS, Defense Media Network, and official Navy history sources document M197-equipped AH-1W and MH-60S context across Gulf War, Afghanistan, Iraq, and Operation Inherent Resolve service.
M167 Vulcan, Towed 20 mm short-range anti-aircraft gun, Air DefenseAir DefenseM167 VulcanTowed 20 mm short-range anti-aircraft gunThe M167 Vulcan is a U.S.-origin towed short-range air-defense gun built around the 20 mm M168 six-barrel rotary cannon, a carriage-mounted adaptation of the Vulcan family for close-in defense against aircraft and ground targets. U.S. records place M-167 guns with coalition forces during Desert Shield and Desert Storm, while Yemen imagery shows Houthi forces using captured guns on improvised vehicle mounts as mobile direct-fire weapons.

Sources

NC621 | KNDS GroupPublisher: KNDS Group | Note: Supports NC621 product background, KNDS France manufacturer context, specifications, aircraft compatibility, and official image provenance. | Accessed: 2026-06-2920M621 | KNDS GroupPublisher: KNDS Group | Note: Supports 20M621 cannon background, 20x102 mm NATO ammunition, firing-rate, recoil, firing-mode, and mount-family context for the NC621 pod. | Accessed: 2026-06-29M-346FA gun pod agreement | KNDS GroupPublisher: KNDS Group | Note: Supports the Leonardo and Nexter M-346FA gun-pod integration program and link-and-case recovery context. | Accessed: 2026-06-29HForce | AirbusPublisher: Airbus | Note: Supports HForce platform context, including fitment on H125M, H145M, and H225M military helicopters and ballistic weapon-pod categories. | Accessed: 2026-06-29HForce-equipped H145M firing campaign | AirbusPublisher: Airbus | Note: Supports the H145M HForce ballistic development test that included the Nexter NC621 cannon pod, HMP400 gun pod, FZ231 rockets, Wescam MX15 sensor, and Scorpion helmet sight. | Accessed: 2026-06-29H215M missions | AirbusPublisher: Airbus | Note: Supports the H215M mission page's 20 mm gun pod option and 180-round fit context. | Accessed: 2026-06-29AIDC AT-3 weapons list | TaiwanAirPowerPublisher: TaiwanAirPower | Note: Supports the AT-3 store list that includes 20 mm gun pods among carried weapons, without identifying the NC621 model. | Accessed: 2026-06-29