Case in point, this motorcycle that the British Army had built in and around 1919, complete with a sidecar and what looks to be a Vickers water-cooled machine gun. Dope. According to the post on ...

The Vickers was a water-cooled gun with a range of 4,500 yards (4,100m) which was adopted by the British Army as its standard machine gun in 1912. It could fire up to 500 rounds per minute.