With help of Tom, resolved one problem

[alvin]

4v magazine spring on early Mauser C96 is not easy to come. Tom told me that he had it.

Installed correct 4v spring today. Please note, 4v spring's total length is shorter, but the arms of the v is longer than common 5v spring. This is a hard to come part. Only one collector told me that he had a spare one in the past few years, unfortunately, he did not want to sell it.

Thank you, Tom!