ptr-91 Magblock

Note this is my final version (v4) of this design. It has rounded edges at the top to avoid catching the spring edges upon compression. It is also cut out at the bottom to fit around the spring on the baseplate.
Note, you should print this on its side for the best results.

This object was made in Tinkercad. The original source files can be found at: https://www.tinkercad.com/things/3rBqHnjpQTK