Nod if understand what those parts are and what they do. Because the lower receiver and those parts determine the capabilities of a rifle. All of the parts were signed specifically for the civilian market. Those parts are what determine a full automatic battlfield weapon from a semi automatic purpose built for civilians.
You got questions to answer. If you can answer them you win. No more word games.
Which capabilities does the weapon have that make it a combat weapon?
Here is another question you have dodged. If this is a weapon designed for combat since it was mass produced BEFORE the M16 why was it not standard issue for combat?