The statute has language about leaving them out and unattended. I haven't seen anything about possessing or manufacturing them as being illegal.

If we get to the point of total anarchy and real SHTF, why stop at a pop-it or small flash bang. FRONT TOWARD ENEMY should do the trick. Since we are going that far, we are talking about lots of det cord, automatic weapons and armored vehicles aren't we?

Be safe.