Re: The thing that actually has me the most worried...
And in particular, it doesn't look like a gun, and surely it is the immediate recognisableness* of a gun-like thing that gets people to stop what they are doing when you say "stop I have a gun". If you have to explain that it's not some star trek knockoff prop then in the words of our most revered agent: "No, Lieutenant - your men are already dead."
* sorry