As of version v35 of Batocera there is built in support for lightguns which is awesome. I'm choosing to try it out with my Steam Deck, it's a lot of fun if you have a gun! Here's what you need to know...
Time Stamps:
0:00 - Intro
1:23 - Proof I'm Using The Steam Deck BUT It's In Beta
2:05 - If You Want To Use 2 Guns Have 2 Gamepads!
2:26 - How My Sinden Light Gun Works
3:36 - Creating A Light Gun Game Collection Automatically
5:11 - Let's RTFM...Read The Fricking Manual!
5:51 - Not All Games Are True Light Gun Games, How To Hide Them
7:26 - Different Light Guns Depending On Your Budget Or D.I.Y Skills
10:05 - Global Calibration
11:42 - Understanding The Pros & Cons Of The Sinden Gun
16:34 - Make Sure The Systems Emulator Supports Light Guns!
17:40 - Why Your Aim Is Mostly Likely Off
20:02 - There's A Spreadsheet For Tested Games
20:50 - Controller Type Option, Adding On Screen Crosshairs
21:25 - Troubleshooting Section
22:14 - Outro