"For every action there is an equal and opposite reaction." - Sir Isaac Newton
If any device reduces recoil, then it has to do it in one of two ways.
Either it is also reducing energy going down range (reduced recoil loads, or barrel porting), or it is just spreading the same recoil/energy out over a longer period of time like those stupid Knoxx stocks with springs and mercury filled gizmos. The springs absorb some energy, but then must spring back.......resulting in feeling the recoil twice!
It is laws of physics and there is no getting around it.
Personally, I want my rounds to knock the bad guy's dickstring loose. I'm willing to take it on my end just to deliver on his end.
But all that aside,...this is the hokiest looking website I've seen in a while.
It just reeks of snake oil.