PC-50x (Programmable Cartridge): 507 Shooting Gallery
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Retro Gaming: This is a 1978 PC-50x Machine. Specifically the Radofin Telesports iii, but there were many clones at the time, some of which (Prinztronic, Acetronic) is compatible. Not to be confused with the later 1292 series, which has a keypad controller and greater functionality and game library.
Officially, 7 different games were released on the system, with an 8th game something of an urban myth. Different clones had different releases of these 7 games, often with different sized cases and name changes to make collecting both confusing but potentially possible by mixing and matching from different sets. There is no gameplay differences between 100x, 200x, 300x, 500x series, though some have individual controller ports on the back of the cartridge.
This system is played via its original RF signal through a VCR machine to convert signal to composite, which splits its sound and video; into a SCART cable in this format. That then gets converted to '720p' HDMI signal to be captured in my usual device.
This game is 507 Shooting Gallery and is ultimately the first removable cartridge form of a light gun game after the dedicated machines. It comes in 3 modes each split into two: Target, Attack and Skeet. Some of these modes require a "slave" gun that splits the main connected "master" gun for two players.
As I don't have a compatible gun on hand right now, I've just gone through with the motions of recording the automated setup so you get the jist of how it works. I will reupload when I have a light gun for it.