Semi-Tube 'Muscle Trainer'

Semi-Tube Slingshot Muscle Trainer

For slingshot shooting muscle strength is the key to achieve power AND precision.
So each day there should be a training session to build up and keep
the muscles to draw and pinch the ammo. But not everybody has the
opportunity to shoot real life ammo on daily base.

So I was thinking to have slingshot training session without emissions
(ammo AND noise) but the feeling of the 'real thing', fork lever force and ammo pinch.

And here it is:

- One