The file 'Quick Draw Magnetic Gun Mount 3D Printer Model' is (stl) file type, size is 30.3KB.
I liked all of the quick draw gun mounts out there but they all seemed too spendy for a piece of plastic. Here is my take at it.
It uses 2 1" x 3/8" earth magnets to hold the gun. Linked below are the magnets I used. 12 for $14 means you can have 6 of these for less than it costs to purchase 1 from a retailer online. The magnets come with some stainless screws that work perfectly to mount these. You'll only have enough screws to mount 3 of them but additional screws can be had for a couple bucks at your hardware store.
Magnets:
https://amzn.to/30z2E4R
Print it at 0.3mm layer height, be sure not to use PLA if you plan to mount this in a car as it will warp and melt. PETG or ABS will work great.
QuickDraw_Gun_Mount.stl | 134.0KB |