This is where I believe kishi made a mistake. Since kakashi isn't an uchiha he can NOT deactivate his sharigun. Since he can NOT deactivate his sharigun he should not have the ability to make it evolve into the MS. I say this because itachi said only a few uchiha had the ability to achieve MS. If that is true then that means kakashi shouldn't be able to achieve it cuz its not in his blood. What do you guys think.