Bushmaster IV

Bushmaster IV
Type	Chain-driven autocannon
Place of origin	United States
Production history
Designer	Alliant Techsystems
Manufacturer	Alliant Techsystems
Specifications
Mass	Receiver: 198 kg (437 lb) Feeder: 29 kg (64 lb) Barrel: 138 kg (304 lb) Total: 365 kg (805 lb)
Length	4,018 mm (158.2 in)
Width	430 mm (17 in)
Height	478 mm (18.8 in)
Cartridge	40×365mmR
Action	Open bolt
Feed system	Linkless feed

The Bushmaster IV is a 40 mm chain-driven autocannon designed and built by Alliant Techsystems, based on the M242 Bushmaster, Bushmaster II and Bushmaster III.^[1][2] The Bushmaster IV fires 40×365mmR 3P (Prefragmented, Programmable, Proximity-fuzed), APFSDS-T Mk I, and APFSDS-T Mk II rounds. The 3P round will provide air burst capability and the APFSDS-T Mk II can penetrate armor with a thickness in excess of 150 mm (5.9 in).^[3]

Specifications

The Bushmaster IV requires 5 hp (3.7 kW) at 24 volts to operate, fires from a cook off safe open bolt with absolute hangfire protection, and ejects forwards. It fires NATO standard 40×365mm ammunition from an integral linkless feed and has a recoil force of 62,272 N (13,999 lbf). The ammunition was originally developed for the Bofors 40mm L/70 cannon.

See also

• M230 30 mm autocannon
• M242 Bushmaster 25 mm chain gun
• Bushmaster II 30 mm chain gun
• Bushmaster III 35 mm chain gun
• Bofors 40 mm L/70

References

1. "40mm Bushmaster IV Automatic Cannon". Archived from the original on 2 April 2014.
2. "Bigger, badder Bushmaster cannon in the works". 8 November 2013. Archived from the original on 30 December 2013.
3. Borén, Michael (June 2002). "Presentation of the Bofors 3P and System Concept" (PDF). Archived from the original (PDF) on 28 February 2013. Retrieved 30 December 2013.