I know a little of the history of these devices. While of course the J.P. Sauer and Sohn Modell 38/h pistols themselves were produced in Suhl, it is written that 250 of these leuchtzielpistolen "LZP" (light aiming pistols, think pistol with IR laser sights) were built in 1939 on behalf of SS-Obergruppenführer Heydrich and the Führerschutzkommando and various special police units were equipped with them. Toward the end of the war (if not always) they were produced by "Group II C 1 laboratory" of the Forensic Institute of the Security Police ("KTI") in Warsaw and stored at, and distributed from, KTI "Group II C 4 weapons depot" in Rauscha, Lower Silesian (today Ruszów in Poland). Peter Hoffmann in his book "Hitler's Personal Security" describes these devices in 1941/1942 being carried by RSD guards on night duty patrolling the Wolf's Lair ("Wolfschanze" was Hitler's WWII Eastern Front military headquarters in "Görlitz in Ostpreußen" (Gierłoż) Poland). It is written elsewhere that in 1944 Group II C 4 weapons depot also held LZP's for dispatch to the Einsatzkommandos.