I’ve had this issue. My only option at the time was to use it for an infusion. It fixed itself today and allowed me to dismantle my old one I had. I’m thinking it’s tied into a specific quest line or quest. I think I got mine from an engram that locked it all up. Someone else got it from the new guy in cosmodrome. It’s sporadic but always with this weapon right after it’s received that it locks all other of the same one.