Piston as a Show Absorber (Further Exploring)

[2011FRC2443]

Can we use a pneumatic piston that is not hooked up to any tubing or pressuring device?

With all do respect:
<R66> states: H. For the purposes of the FRC, closed-loop COTS pneumatic (gas) shocks are not considered pneumatic devices, and are not subject to the pneumatic rules (although they must still satisfy all other appropriate rules).

Our previous question was deemed as "not permitted." We would like to explore as to why, so we may better our designs.

Thank you!

[GDC]

The proposal is prohibited because a cylinder is a cylinder, not a COTS closed-loop gas shock, which is permitted in Rule <R66-H>.