I have a mechanical lock pick gun from Brockhage, but it arrived in a cardboard box, with extra parts and no storage solution.
So i made this generic case that should work with most versions of the mecanical lock pick gun you can find online (though definitely tell me in the comments if your lockpick gun fits).
The outer case, I just modified from this, so please give them some love too (edited the parametric settings to fit the internals).
Please note, to assemble, you need the following non printed parts:
The author remixed this model.
Changed the parametric alues to fit with the internals that are also part of this download