Quoted from winteriscoming:While still true today (I do see CRTs on Craislist a lot), they are getting harder and harder to find. The planner (read: hoarder) in me wants to buy up a bunch of backups.
On top of that most older consoles can be modified to run backup games and I'm seeing several developments for SD card loaders that are being made for many consoles.
PS2 even has the ability to load games from a hard drive. I imagine a PS2 in an arcade cabinet setup where you turn it on and choose your game without having to switch discs would be pretty awesome. That covers many of the Time Crisis options right there, though I'm guessing you'd have to go out of your way to put together some kind of pedal system as they seem to just have you push a button on the gun.
Console/light gun combos I currently own are:
Dreamcast (I really wish Sega had put out an official gun in the US)
NES
PSX
PS2
Saturn
I'm considering an Xbox gun for HOTD3 and apparently there's a light gun rifle peripheral for the Silent Scope collection on Xbox.
I think there are several Genesis light gun games, but I was never aware of them as a kid. I never had the Super Scope for SNES, either, but was also never aware of anything worth getting for it.
Once you get into PS3 ports and beyond (Time Crisis 4, I believe), they utilize something other than the CRT/Light gun setup. I think it utilizes the PS Move with a sensor thing, so they'd work on LCDs, but I have no idea how accurate they feel.
Don't forget the Sega Master system had a gun as well. There was also the "Justifier" pistols for the Konami shooting games, and the cases were based on the arcade guns. Even 3DO had guns (same case as the Konami guns).