@Mal0-1471 for whatever reason decided to nuke everything they ever uploaded on this site. I tried reaching out to ask if they still had any of their files and was immediately blocked, so I think it's safe to say they don't care about the game anymore.. Thankfully I still had two of their mods installed and backed up (this one and First Person Legs). The rest of their mods sadly seem to be lost to time, and that includes a lot of PAYDAY 2 mods.. Hopefully someone out there still has some of those files laying around and can re-upload them.
This mod simply folds the SPAS-12's stock, as is mandated by the rule of cool. It's a game based on 80s action movies, how could the devs not let us fold it?! It's an iconic look! Maybe one day if we ever get actual weapon attachment customization.
I couldn't find an archived version of the original mod page, so I don't have the description Mal0 originally used to paste here like I could with the First Person Legs mod. Sorry.