Bolt Action Pen

Inspired by the bolt-action pens made by [Mussy](https://www.thingiverse.com/thing:2825430) and [Begal](https://www.thingiverse.com/thing:2441657). They are good designs but I was dissatisfied with several aspects on a purely personal preference level.

I wanted a design that didn't require additional hardware beyond the pen insert and spring, and was easily adjustable to accommodate a wide range of pen insert sizes.

The bolt design includes a built-in lever with the endcap closing off the