I recently bought a variation 4 Sauer 38H (military blue finish, no safety lever, serial left tang), sn 484XXX. It's a nice condition matching E/37 pistol. When I cycled the slide for the first time, much to my surprise, it locked back. When I dropped the magazine, the slide released. The first and third photo are the magazine with the locking slide behavior, and the second photo is a normal lat-war magazine.
I have a number of Sauer 38Hs and none of them lock back. The magazine is a typical late-war stamped sheet metal floor plate model. On examination, I discovered that the magazine has an unusual follower that is higher up in the pistol. The pistol locks on manually cycling the slide, but I'm not going to try to see how it fires until I understand it. I exchanged the magazine with another variation 4 Sauer 38H and the odd behavior follows the magazine.
Has anyone ever heard of such a modification to the magazines? Any thoughts or comments?
Sauer 38H Magazine 02.jpg Sauer 38H Magazine 03.jpg Sauer 38H Magazine 04.jpg