Sad thing is I always kinda wanted an Actionmax when I was a kid. I'd see them on clearance at KB, but they were still $20 or so which was too rich.
Oh well. I had Captain Power tapes which did the same thing without a suction cup sensor slapped to the TV.
https://www.youtube.com/watch?v=1FAuDYqaW58 Better action too.
I was assuming the suction cup thing was so the 'game' could signal the score counting box that there actually was something to shoot at (so shooting at a light bulb flickering at 60Hz wouldn't trigger it all the time) and maybe even indicate that the thing on screen wasn't supposed to actually be shot at (one of the games had bystanders). I never had a Captain Power gun, did it do anything like that?