Really, please stop with your nonsense.
No one knows the details for sure but should it have been the case that Brandon Miller knowingly transported the gun to that scene and knew that Darius Miles and/or Mike Davis were asking for it, I don’t care if it was legal or not, it was poor judgement.
At least if I was in his shoes, my first efforts would have been to try to talk them down/get both of them out of there rather than just freely saying ‘ok here’s your gun, just don’t do with it what one could reasonably think you just may do with it’.