Tsk-tsk...........
There's the notch on the firing pin spring retainer that has to fit into the slot of the breech tunnel, then you turn it clockwise until the screw slot is in the vertical position. I must have slipped while trying to control the spring tension, and the bugger went counter-clockwise, and the notch jammed against the inner wall of the breech. Does that make sense? Ooooohhhh...the words that came out of my mouth - similar to what I say when I don't get along with my computer.
I have GT making me up a pair of nickle Mec-Mags with French walnut plugs, like the ones that Martz used on his Lugers. The springs inside my Mauser-marked mags are indeed stiff, so they'll be put away while I use the Mec-Gar ones.
This ain't no Russkie trash

...This is Mauser's attempt to make a financially viable Luger. Too expensive without cutting corners, so the Luger died. The blue/black finish is beautiful. It doesn't have the historical character of the oldies, but it'll do fer me.
I guess that I should have put this in the Post War section, but what the heck.
Cheers,
Bill