I can't change weapon perks on the "Last Perdition" Pulse. The game doesn't let me change barrels or magazine options. I've tried through DIM too and the only thing that says is that I "cannot afford material requirements for that action". So, not a clue on why this is happening or why this is just this weapon specifically, sadly I don't have another "Last Predition" to compare against and see if that version of the gun is working fine, I have also seen a similiar threat on someone experiencing the bug with a version of "The Title" SMG, but there was no solution stated. Is anyone from Bungie or anyone else able to confirm this is a bug or do I just have a cursed gun? It has pretty good perks as well, and I'ld love to use them.