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Orbital ATK developed a modified version of the Bushmaster II, known as the Mk44 STRETCH, which can fire the 30x173 mm Mk310 PABM-T airburst round. [9] [10] In January 2020, Northrop Grumman revealed the development of proximity airburst rounds for the LCS' 30 mm gun modules to destroy small unmanned aerial vehicles (UAVs). Since the modules ...
The prime contractor was Alliant Techsystems – later merging with Orbital Sciences Corporation to form Orbital ATK, in turn being taken over by Northrop Grumman and renamed Northrop Grumman Innovation Systems – and the industry team includes Interstate Electronics Corporation. [3] By April 2018, more than 25,000 PGKs had been produced. [4]
The XM813 Bushmaster, also produced by ATK Defense, is based on the Mk44 and is offered as an upgrade for M1126 Stryker and M2 Bradley. Improvements include a one-inch longer barrel, integral mount to increase first round hit probability by up to 10 percent, and dual recoil system to enhance accuracy and cope with future hotter propellants.
The upgrade mounts a larger Alliant Techsystems Mk44 Bushmaster II 30 mm cannon for a 500-meter range increase, as well as a coaxial .50 caliber M2 heavy machine gun. Elevation is increased to +75 degrees for engaging UAVs and helicopters, and ammunition storage is greater at 420 30 mm rounds.
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 Kongsberg turret and Orbital ATK XM813 variant of the Mk44 Bushmaster were officially selected in December 2015. [92] Kongsberg later renamed the turret system the RT40 (Remote Turret). [93] The first upgraded Stryker, designated XM1296 "Dragoon", was delivered for testing in October 2016, with fielding to begin in May 2018. [94]
The deal officially closed on February 9, 2015. ATK's sporting-goods division spun off to form Vista Outdoor on the same day. [4] On September 18, 2017, Northrop Grumman announced plans to purchase Orbital ATK for US$7.8 billion in cash plus assumption of US$1.4 billion in debt. [5] Orbital ATK shareholders approved the buyout on November 29 ...
The turrets are designed to mount a 25mm Oerlikon KBA or 30/40mm ATK Mk44 Bushmaster II autocannon. The main armament may mount a co-axial machine gun. A variant allows the operator to aim and fire anti-tank missiles. The turret, and its weapons, can be operated by a single individual. [1]