There's an issue with this mod. When subscribed, it will occasionally cause a glitch where firing a specific weapon (which gun it is seems to vary) will cause your aim to to jump around wildly. Sometimes the firing will put the aim straight up in the air, other times straight down. Sometimes will it just go crazy. The only solution is to restart the game. Once it happens, it will happen every time you pull the trigger on that gun.

Odd glitch, so I'm curious, did the author change anything at all besides the sound effects? Was even one script or animation touched in any way? I know it's this mod, as unsubscribing fixed the problem, and the only other person I've found with this glitch had this mod as well.