Really? You have never made a moltov without the rag?
I have, many times. We used to call them micky bombs because the jars we used were Michelob bottles, but a moltov is WAY more effective if you do not put the rag in - it is MUCH more explosive than a standard version.
And the fact that the firing pin is in the box next to the rifle does not mean that it is suddenly immune from all firearm laws. Try bringing a loaded weapon into a courtroom and then claiming you are innocent because the firing pin is in your other pocket.