When i add this mod to my weapon the damage does not seem to be going up. Tested multiple times in the simulacrum. Looking as to why it would not be applying properly.
Edit: I would just like to thank everyone for taking the time to help. I even asked trade chat in game but people were just trying to buy it for 200p.
Have you tried comparing single shot damage against both armored and non-armored? I find it very hard to believe that with a powerful riven like that damage would not increase, even against heavily armored targets