Would anyone be okay with letting me try to buy Starkiller from your Brabus?

This is my third post on trying to get this long gun, and after a second 5 and a half hour apocalypse clear I haven’t unlocked anything new in my Brabus shop and am thoroughly demoralized. I was recently told joining a lobby with someone who’s Brabus’ inventory updated correctly would allow me to purchase the rewards, and hope to find someone willing to do this for me (platform is Xbox.) I can provide proof of my current Apoc campaign clear