Laser collimator with adjustment for 6mm laser modules

This thing is inspired by this one:
https://www.thingiverse.com/thing:2372177
Unfortunately, the (china) laser modules that I have are all quite off axis, so I decided I need a version where you can compensate for this.
The laser module bore in this variant is a step bore that features 2 mm diameter for the laser beam to pass the adjustment plane, a 6 mm part to center the front of the laser module, and a wider part which provides room for adjustment. Adjustment is done by means of 3 M3 scr