So clean things up, Use Krytox to lubricate

Suppress all detonation and then lock up the piston at full stop (Max compression)

What a power house you would have. A "dumper" with a PCP reservoir.

I want one. !!! It would be WAY better than a pump up in regard to to pumping commotion, and would have an interesting softer kick in the recoil.

I want one! (oh! I already said that)

And I don't mean friction drag to slow the rebound, what is needed is an arrester. "THE CLAW"

Cardew's sprague clutch was a joke in those proportions with only three points of contact. Forces would have been very high.
Throw that design out!