Can AniTay Solve the Mystery of Death Gun?

At the end of this week's SAO II episode I thought up of a little game.

As of this episode (episode 9), everything you need in order to get the general gist of how Death Gun can shoot someone in game and kill them in real life has been laid out.

So my question is, can you guys figure out how it's done?

Of course, if you've read the LNs already, you already know, so please don't spoil it for other people.

I may or may not reply to people depending on how spoilerish the reply would be, but otherwise, let's get those thinking caps on, and let's see what you guys come up with.