There is not very much for commercial lugers - it's an area that could use a good reference.
We do have a commercial luger database, but I already checked and this one is not on it.
However, a group of the
Hans Tauscher 9mm lugers comes up around 48502.
Below is an excerpt from
Dwight Gruber's DWM Commercial Luger Database (ver 5) 2014,
which is in the
Commercial Lugers section.
You can measure the barrel from the muzzle end to the breech opening.