Compact 3x AA Battery hoider

I designed this triple AA battery holder for a larger project that I am working on, as I could not find a compact 3 cell holder on ebay.
This is my first working version, and although it works great expect to make some updates in the near future.

To make this holder you will need the following:
1x 3xAA Battery holder middle
2x 3xAA Battery holder top and bottom
2x M3x12
3x AA battery spring contact (see link)
3x AA battery notch contact (see link)

Used batteryclips:
https://eu.banggood.com/Wholesale-Warehouse-10-Pairs-Silver-Tone-Metal-Battery-Spring-Plate-Set-for-AA-AAA-Batteries-wp-Eu-1046111.html

Update 19-04-2018:
Added the Fusion360 design files and step exports