Introducing my meticulously designed 3D model holster crafted specifically for the Ruger Mark 4 22/45 Tactical with a 4.4" barrel. Precision-engineered, the holster is molded to perfectly fit the contours of the Ruger Mark 4 22/45 Tactical, ensuring a snug and reliable fit. The holster can be printed without support and requires one screw to adjust the retention and two screws for a belt mount. The holster already has slight retention without the screw.

In case you are looking for a holster for the 22/45 Mark IV Lite version, checkout Thomas Pedersens (@FuniGui_1095272) Remix https://www.printables.com/model/932968-ruger-2245-mark-iv-lite-holster.

Other Ruger 22/45 models might work but i couldn’t verify that.

Recommended is any holster clip with a hole size of 5mm (tek-lok style mounts work). There are 3 holes for mounting the clip. The distance between each hole is 19.5 mm.

For the retention screw, any screw with a 5mm maximum diameter and a length of 8.5mm should work.
Let me know if I can help with getting the additional hardware or specs.

This holster is intended as a range toy since a 3D printed part cannot guarantee the same reliability as an injection-molded holster or one made with high-quality kydex.

You can find a holster mount for Kore 2.25'' belts here: https://www.printables.com/model/775183-rigid-belt-mount-for-pistol-holsters-38-mm-hole-di

Let me in the comments know if I can upload a mount for your belt size.

Printing:

The holster was successfully printed without support with PETG. PLA might work, but it can break when using too much force. The print direction should be muzzle down. Otherwise no special settings are required.
I recommend sanding the retention part of the trigger guard a bit. I suspect the layers will grind off plastic from the pistol with time.

Nozzle size: 0.4 or 0.6 mm
Permiters: 4
Infill: 25%

If you have any questions or encounter any issues with the model, feel free to contact me.