Kongsberg 37mm Stridsvognkanon (S) (Bofors)

Being the first cannon be used on the first production tank of Norway it needed to be reliable and simple to operate. Because of this the Kampvogn Committee thought that reaching out to Bofors AB and get them to assist in designing it
=== Sweden's design ===
Bofors already had an existing 37mm Anti-tank gun as the base, the only things what was diffrent was the recoil system that Kongsberg Våpen og Stridsvogn Fabrikk came up with called the Kapsulert Rekyl System (KPS) for tanks. A new muzzle break and breech was also designed along with the other small changes to allow Kongsberg to produce them easier.
=== The Infantry Anti Tank Variant ===
Norway also wanted a Vertical wedge mechanism variant for Infantry anti tank. And in 1937 the Kongsberg 37mm Stridsvognkanon (B) was designed, Inspired by the simple design of the Swiss "24 mm Tankbüchse 41"
=== Short Lived ===
The gun had a short life of only 4 years in active service on tanks due to the new Panservogn m/39 having a better 45mm gun. Although the guns that remained was used in the Troll Panseret Kampbil m/39 until most of them where scrapped in 1941. After its time as a vehicle cannon was over all remaining ones where converted to Infantry cannons.
=== The 1950 Prototype ===