30 x 173mm suite of ammunition

Also known as

30x173mm ammunition suite
30x173mm advanced ammunition
30 mm x 173 mm suite of ammunition

Northrop Grumman's 30x173mm suite of ammunition is the 30 mm Bushmaster family for Mk44 chain guns and related mounts. The company describes it as advanced ammunition, and MSI's SEAHAWK DS A2 page shows the Mk 44 cannon in a naval mount configuration with 400-round ammunition capacity.

30 x 173mm suite of ammunition, 30 mm ammunition family, Munitions

Image source: 30x173mm Bushmaster Chain Guns

Profile / Specs

Profile

Origin: United States
Built by: Northrop Grumman
Type: 30 mm ammunition family
Service note: Modern Bushmaster chain-gun ammunition family
Produced: Modern production

ammunition autocannon surface warfare

Specifications

Caliber: 30x173 mm
Compatible gun family: Mk44 Bushmaster chain guns
Compatible mount: DS30M / MSI-DS SEAHAWK DS A2 naval gun mount
Ammunition class: Advanced ammunition suite

Firing Weapons

Northrop Grumman identifies 30x173mm advanced ammunition as the Bushmaster chain-gun family, and MSI's SEAHAWK DS A2 page shows the DS30M mount with the Mk 44 cannon.

Firing weapon

Weapon type

Firing evidence

DS30M 30 mm naval gun, Naval gun, Naval Systems

DS30M 30 mm naval gun

30 mm naval gun mount

MSI's SEAHAWK DS A2 page shows the DS30M family with the Mk 44 cannon, which aligns with Northrop Grumman's 30x173mm Bushmaster ammunition family.

Sources: MSI-DS SEAHAWK DS A2, 30x173mm Bushmaster Chain Guns

Service And Conflict Use

Service History

In service: Ammunition family for Mk44 Bushmaster chain guns and related mounts such as the DS30M naval gun.

Media

30 x 173mm suite of ammunition Images

30 x 173mm suite of ammunition, 30 mm ammunition family, Munitions - view 1 — Source: 30x173mm Bushmaster Chain Guns

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Sources

30x173mm Bushmaster Chain GunsPublisher: Northrop Grumman | Note: Supports the 30x173mm advanced ammunition family, Bushmaster chain-gun context, manufacturer background, and official product images used on this page. | Accessed: 2026-06-27 MSI-DS SEAHAWK DS A2Publisher: MSI-Defence Systems | Note: Supports the DS30M Mk 44 cannon context and the naval mount compatibility relationship. | Accessed: 2026-06-27