I found someone who is willing to sell me a TEC-9 and I wish to own one. I plan on getting a stock for it, however here is the question that I need answer. The person who is selling it says it comes with a fake suppressor that he created so he could hold it at the end. He planned on turning it into a carbine. If I were to be stopped by a LEO with the fake suppressor attached, would I be arrested for not having a stamp on it even though it serves no purpose?