They were built from 1931 to 1940. Because of this and that they were built on different trucks they were not all identical. The armament was two m/14-29 machine guns or one 37mm canon and a machine gun. The trucks were painted steel-grey. They were never many of them, from 1931 to 1937 12 were delivered and a further 7 until the start of ww2. The machine guns were later up-graded to the m/36.
The armoured trucks were given to the cavalry. There were three trucks in each platoon. In each platoon one had a canon and the others machine guns.
|pbil m/31 with machine guns|
|pbil m/31, some with machine guns, some with 37mm guns|
Later they were re-armed and got a nice paint job. But that is a different story.