Apariently, The co.:Dansk Industri Syndikat that made the Madsen gun have changed co's over the years at least three times since 1960. The new or suviving co is called Disa. They have a branch office in Oswego, Illinois. But they told me to try the main co. in Denmark. I will try this week and see what we can come up with!...I will be glad to share what I may get from them. Maybe a good drawing and a manual on the mark4 LMG Madsen Saetter gun!