Space between chamber and breach block

[Vlim]

There is no problem, it's absolutely normal.

Whatever you do: DON'T SHOOT IT. Vickers lugers are rare, parts are numbered and impossible to find correct replacements for. You will turn your $3000+ pistol in a $1000- gun in one go if you are unlucky.

If you feel the need to shoot a luger, pick up a shooter grade pistol and play with that instead.

Can you post pictures of the magazines? Dutch magazines are unnumbered and there were several variations.