A wonderful job by Fridator :

I am working on a Apollo 11 spacesuit costume, and wanted this flashlight to go along with it. The two printed parts combined with a Ledlenser K2 flashlight are used to make this a functional model.

Please see this Instructable for directions on how to finish the model: https://www.instructables.com/3D-Printed-Functional-Nasa-Penlight/