Ksp m/39 machine gun  Kulspruta m/39 (Ksp m/39) is the Swedish designation for the M1919A4, chambered in 6.5×55mm and 8×63mm patron m/32, license-built by Carl Gustafs Stads Gevärsfaktori, and from about 1975 rebarreled in 7.62×51mm NATO. Intended for use in tanks and armoured vehicles, it is available with both left- and right hand feeding, with the former used in Combat Vehicle 90.