IMA has just come up with this, which according to them is based on an original that they have. A friend of mine found a similar German-produced reproduction, albeit with a buckle for the strap release, and with the "backboard" portion ending at the barrel base, instead of extending to the muzzle.
Any comments/experience on its historic authenticity? It certainly looks interesting, and potentially viable for the once a year I like to campaign my 1938 John Martz re-done S/42 in an IDPA match.
http://www.ima-usa.com/militaria/hol...n-holster.html
Here's the other German reproduction with the buckle set-up:
http://www.militariaandmore.de/Holst...ooper-WH-Elite
Best, Jon