Problem with newly released Winchester gun

Unforunately, after spending over 200k gp on crates to recieve a winchester gun, it's massively bugged. I meen i choose to put it in bag 1 and when i go in game, its not there and goes automatically to my pistol. I search for it, its not there. And even when pressing B, it says its in my bag, although it isn't. A bug nethertheless which needs fixing!

Thank you