I removed the old scopes from my inventory and changed them with the new one(take my money EW XD) but the weopon I was holding in my hand while being in the storage (wich had one of the removed skopes equiped) got all its skins removed. I now tested it multiple times and it keeps happening.
#Rifle skin removed from my weopon after removing the equipped scope from my inventory.
pallid hollow
the skin is coming back after resetting time or reloading the game so not a big deal