and the other is handy mount for the osr2 which most likely will have rigidity & holding issues. Can any1 share the STL files for any of the T-wist compatible open receivers from this thread? thanks in advance
You can always modify a spare Fleshlight case to hold any sleeve, which will let you use any mounting mechanism designed for that holder.
That’s what I’ve been doing for many years now. It will hold a wide variety of sleeves, and works perfectly with the Twist 5 receiver (probably any Twist version).