https://stdgun.com/s333-thunderstruck-gen-ii-22wmr-double-barrel-revolver/
Since .22 Mag was added to the game, this would be a perfect opportunity to add an incredibly inaccurate double barreled revolver to the game. Sure, adding a mechanic that fires both barrels simultaneously while also allowing two more to chamber right behind it without reloading might break the game a little bit--but you only live once, right?
In all seriousness though, I just like weird firearms, and seeing them in one of my favorite games is a huge win for me. Included a photo of my first gen, modified with an added picatinny rail and a cheap red dot on top. Note the shorter barrel than the second gen. The first gen is known for having issues with one of the barrels keyholing, so I didn't feel bad modifying this strange gun so extensively. 🙃