Thompson m1a1 bolt

This is a bolt for a Thompson m1a1. I'm using it in an airsoft aeg to make a dummy replica.

I started with a 1928 bolt by MikeS on GrabCAD. I filled in the holes and reworked it using dimensions from a real m1a1 bolt. The airsoft receiver is slightly wider so I made a version that fits better. I also made a version of each with the front demilled.
https://grabcad.com/library/thompson-1928a1-bolt

The bolts require 201.17mm of z height. The demilled versions require 200mm. If your printer isn't able to go that high recess the rear of the bolt below the build plate in the slicer.

The airsoft cocking handle knob can be reused.
https://www.thingiverse.com/thing:5172034

The Fusion 360 file is included.