Northrop Grumman is starting the shipment of the Mk44 Bushmaster II chain gun for Poland’s Borsuk next-generation infantry fighting vehicle.
The weapon is a 30-millimeter chain-driven autocannon fielded across NATO member forces for its reliability and versatility on armored platforms.
It has a barrel length of 2,410 millimeters, an overall length of 3,405 millimeters, and a weight of 160 kilograms (353 pounds).
Additionally, it uses two types of ammunition belts and can be mounted on different systems, including lighter combat vehicles and naval ships, in addition to infantry fighting vehicles.
The Bushmaster II has a cyclic rate of fire between 100 and 200 rounds per minute and an effective range of roughly 3,000 meters (9,843 feet) on land and 5,100 meters (16,732 feet) with maritime platforms.
About the Borsuk
The Borsuk was first introduced in 2017 and is Poland’s first fully indigenous tracked infantry fighting vehicle. It is designed to replace aging Soviet-era BMP-1s, offering improved protection, mobility, and firepower.
The system measures 8 meters (26 feet) long and weighs 28 tonnes (61,729 pounds), allowing space for a crew of three and six infantry passengers.
It is equipped with a 720-horsepower MTU turbo diesel engine and an Allison 3040 MX transmission for a speed of 65 kilometers (40 miles) per hour and a range of 550 kilometers (342 miles).
Warsaw plans to receive 111 Borsuks by 2029 under a $1.7-billion contract signed last March as part of a broader plan to field a total fleet of around 1,400 vehicles, with over 1,000 platforms in the standard variant and about 400 in specialized configurations.
