VR gun stock for HTC Vive (v2.3.6)

Updated to v2.3.6 - improved ergonomics also repaired the problem mesh on the rail stl file.

This is a complete redesign of bigwoody003's fine stock which I needed to hack down to fit my 12 x 12 cm printer bed. I simplified it for easier printing and remade the cups to precisely fit the HTC Vive wands. I also beefed up the sliders. I didn't make any Rift cups, but the ones from bigwoody's design should fit as the stocks share the same top rail (or just make his new Uber stock instead, which looks pretty awesome tbh).

I think this stock feels good and solid and the cups fit perfectly, allowing you to easily slide the wands out to reload or throw a grenade, without being loose enough for them to wobble. The geometry of the stock is optimized for the Marsoc AK5C and Volk G3, but works with all weapons except the P90.

There are pegs to secure the rail pieces together (peg1 for the rails, peg2 for the butt), but I recommend gluing them with super glue as well. The sliders can be held in position with #8 nuts and bolts, but it's a good idea to wrap the base with hockey tape for added strength. Where the slider attaches to the rail is the weakest point.