Sorry if I posted this in the wrong place
but I have a "virgin" AR15 lower that I bought right from the manufacture directly in person too ! (use to live near LRB arms) I have never assembled it as a rifle or anything. It's been sitting in my safe since the Clinton days. Now, I'm pretty sure I can get and use a pistol upper but If I ever put a rifle upper I can't go back. However, some folks say I can't use it as a pistol lower because it does not have the words "pistol" stamped on the receiver that part I'm not sure of? Yeah, I know most of you are not into the AR pistol thing but the is a reason for everything.