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Munitions

Belgium

FN Herstal

HMP400

Belgian 12.7mm heavy machine gun pod produced by FN Herstal for mounting on light attack helicopters and aircraft.

Compiled from public sources ·primary reference ↗ ·last verified 2026-07-05

Procurement snapshot

Availability & export

National export licensing

Subject to Belgium export-control approval; verify eligibility with the manufacturer.

Channel: Direct commercial / G2G

Fielded & proven

Operator data not public

Status: active.

Lifecycle cost (est.)

No public unit price to model from. Why so few systems publish one →

Interoperability

No standardised NATO calibre / datalink detected in public specs.

Derived guidance from public data, export regime by country of origin, lifecycle from the GAO ~30% acquisition rule. Verify eligibility, pricing and offsets with the manufacturer and your acquisition authority.

Full specifications

Performance

Speed, range, altitude and engagement capability.

Performance specifications
Rate of fire Rounds per minute (cyclic). Higher increases suppression and hit probability.	1,100 rpm

Firepower

Armament, payload and guidance.

Firepower specifications
Main armament Primary weapon: main gun, cannon or missile type.	.50 cal (12.7 mm) FN M3P machine gun
Caliber Bore diameter of the main gun or rifle. Larger throws heavier projectiles; not simply better, ammunition commonality matters.	12.7 mm
Ammunition Rounds carried (main gun) or standard magazine capacity.	400

Specifications compiled from public FN Herstal and reference sources ↗. Published defense figures are approximations, treat comparisons as directional. Last verified 2026-07-05.

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