This is a pen body for BIC Ink-stick and Parker ballpoint refills, known as G2 style (see photos)
The BIC ink-stick is 117.3 mm (see photo of the broken pen)
Please see the .3mf-files for print orientation.
All can be printed without supports.
A few short overhangs exists but should be no problems.
The author marked this model as their own original creation.