Cometa ZRS (Zero Recoil System) Springer.

Need to add a zero to your listed "total length." I'm assuming its 38.6 to 42.5 inches long, not 3.86 to 4.15 inches long

where did you get this info and right on the description they state mm where it should be cm 

so how does it work, the tube and the frame act as a very large sledge system 

it looks sort of proto typeish, could not find another mention of it online 

where did you get this info

Their IWA 2019 info. Along with their new "Advance BP" which is basically an Orion with side lever

Does it have a GISS type double piston to cancel out the recoil or a sliding sledge mechanism?

HA

Cometa licenced the system from ZRS.

https://www.facebook.com/527502450997671/videos/543357142745535/

Here is one fitted to a TX200 (From about 3.38)

enjoy the freedom of the zero leak oil system, i find that statement to be maybe a clue on how it works 

and the picture of the Cometa shown is a  prototype

it may be a better mousetrap let see how long it takes to get the trap to the user and at what cost 

it is still interesting and something a little different, time will tell

There was already something like in the market from Italy, the Effezetta stock, so, not really new.

The prototype I saw and handled still has some way to go, specially some serious slimming down. In the prototype shown at IWA, 65-70% of weight was in the system.

There are technical and legal questions we will be looking into, but it's definitely interesting.

JMHO