Note to TMM;
You are to be commended for having a brain and using it, instead of going along with the mob.
I share the concern for you though. You ohave stated your friends hate America, love communism and are interested in building lethal weapons. You need to seriously reconsider your friends. These guys are going to get you into their trouble. It isn't fair I know, but if you are near them when they act on their stupidity, you will probably be lumped in with them. Eventually you may be able to convince people of your innocence but, damage will already be done and the incident will follow you.
They want to make a gun? Why? This could be bad and someone needs to be discreetly told about this. I understand the dilemma you are in but the question is, do you want to risk being known by dirtbags as a snitch, or live with the thought that someone died and you could have done something about it. I know it is risky but, being a patriot is more than talking about tattered flags. Sometimes you have to take action to protect liberty, including the right of the community to be safe from stupid people.