M242 Bushmaster
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![Mk 38 25mm Machine Gun System [M242 Bushmaster] • Training ...](/imgres?imgurl=https://i.ytimg.com/vi/MTWdt5DB9k0/maxresdefault.jpg&imgrefurl=https://m.youtube.com/watch?v%3DMTWdt5DB9k0&h=720&w=1280&tbnid=LsqXa-45xoeQHM&q=M242+Bushmaster&tbnh=84&tbnw=150&usg=AI4_-kQzEk7wJvs0MGzNmHegX1G5whvP-Q&vet=1&docid=RwnAYUHNJhXhsM&sa=X&ved=2ahUKEwjQuK6A78-FAxU-j4kEHaGpBY4Q9QF6BAgAEAU)
The M242 Bushmaster chain gun is a 25 mm single-barrel chain-driven autocannon. It is used extensively by the U.S. military, such as in the Bradley fighting vehicle, as well as by other NATO members and some other nations in ground combat vehicles... Wikipedia
Designed: 1976
Action: Externally powered, chain driven, Open bolt
Barrel length: 2,175 mm (85.6 in)
Effective firing range: 3,000 metres (9,800 ft)
In service: 1981–present
Mass: 119 kilograms (262 lb)
Muzzle velocity: 1,100 metres per second (3,600 ft/s)