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30mm Bushmaster II



Overview


Bushmaster II

A Bushmaster II with 30mm barrel and two slot muzzle brake.
Source: Alliant Techsystems - © copyright lies with original owner

Origin
United States
Type
Autocannon
Entered service
Mid 1990's
Status
In service
Development
Early 1990's
Developer
United States - Alliant Techsystems
Production
Mid 1990's - present
Producer
United States
Designations
GAU-23/A (US Air Force service)
Mk 44 (US Navy service)
XM813 (US Army service)
Notable users
United States
United Kingdom
Switzerland
Singapore
Norway

Description


Introduction

The Bushmaster II is an autocannon of US origin. The Bushmaster II is a scaled up version of the original Bushmaster chain driven autocannon. It has a 60% parts commonality with the original Bushmaster.

Design

The Bushmaster II fires the 30x173mm NATO round. It can also be configured to fire the 30x170mm Rarden round or the 40mm Super Forty ammunition. The 30mm model can be identified by its two slot muzzle brake.

Details


Facts Bushmaster II
General
Origin
United States
Type
Autocannon
Caliber
Caliber
30x173mm NATO
Optional: 30x170mm KCB
Feed system
Belt fed, twin feed system, selectable feed
Barrel length
2.242 m
Rifling
Right hand twist
Muzzle velocity
1.080 m/s (standard ammunition)
1.385 m/s (APFSDS)
Operation
Action
Externally powered, chain driven
Rate of fire
Single shot, 100, 200 rpm
Recoil force
35 kN
Dimensions
Weight
156 kg overall
69.4 kg barrel
Length
3.405 m
Width
343 mm
Height
392 mm

Related articles


25mm Bushmaster

The Bushmaster II is a scaled up version of the older and widely used 25mm Bushmaster.

35mm Bushmaster III

The 35mm Bushmaster III is an even larger model of the in the Bushmaster line-up. It is chambered for 35x228mm NATO.