I loved lightgun games on the old systems, and I think the Sega Saturn's Stunner was the best hardware of the lot. The obsolescence of CRTs pretty much killed the tech, but the gameplay style has made a bit of a resurgence a couple times with the advent of the Wii and VR.
You can get modern light guns that work with newer displays. They track using infrared, so it's not quite the same, but it's good enough to play all the arcade mame classics without a problem.