>>536234569
I've made a stock for myself ages ago and it worked reasonably well. One little trick I've done was leaving off hand detached, and then I was pressing the controller into the hole in front of the stock when I wanted to aim. It was stabilizing it more than enough, and then I also had the freedom to use the hand as I please when it's not in front of the gun.

If I'd be doing the stock now, I'd just use a long threaded rod, and then I'd print only three parts
>actual gun stock so rod is not resting on my arm
>one piece that's a partial shape of the main hand controller, so I can hold it with a finger against the stock and then it's stuck in place
>another piece in front, same logic, partial shape, press against it when you want to lock the controller in
It would dangle on my shoulder when not in use with both hands free, and it'd provide stabilization when used.