Conversion to 9mm

[unspellable]

Georg intended that the conversion be done by replacing both the barrel and the recoil spring, same magazine for both. (The main spring is the little spring behind the striker, not involved here.)

Caveat: If you open up seven shooter grade Lugers you will find eight different recoil springs, no two alike. It's a crap shoot as to what you have for a recoil spring to begin with.