so me and my bro test this out today finally and it did not work. he had the ray gun which he let the doctor take and he went to play with the box and got another. he then toke out his hk to kill the doctor but when his ray gun came back it didnt take away the hk so he just ended up having what he had before the doctor came. im not sure if it makes a difference if the ray gun is upgraded but im going to test it out and see and report back. idk if anyone else has test this. but i would like to know what everyones result were.