Vive Modular Gun Controller with Height Adjustable Stock

###Update
This Thing is obsolete, see my improved design here:
https://www.thingiverse.com/thing:2905300

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This gun controller for the HTC Vive has the following features:

• Proportions based on the M16, designed for H3VR.
• Height adjustable stock with 95mm of travel.
• 3 possible configurations: Rifle, Stockless, and Stocked Pistol.
• Attach and detach to the controller in seconds.
• No fasteners required, glue optional.
• Minimal obscuration of the infrared sensors.

The longest part is 200mm.

Note: The stock flexes a bit, unfortunately. I printed mine in PLA, other plastics may flex more.