So I looted a couple pipe revolver rifles, both had finned barrel mods on them. I wanted to attach one of these mods on my legendary pipe revolver rifle, but when i remove these mods from the original weapons, they both come out as 'pipe bolt-action rifle finned barrel' so apparently i can only add them to a .308 pipe bolt action weapon, i can't even put them back on the original weapons that i got them off of...