I have gotten so many answers to this question and can't find an answer. They go from yes with a type one FFL your good to go, to you need a type 7 FFL ITARS, etc. AR platform..... I am opening a sporting goods store and do some light gunsmithing. If I order a lower and bolt a upper on it, I am required to be a manufacture. Which is stupid, I know, but that is they way it is. Now if I sell a completed lower, separated from a complete upper, and do not put it together, so they are just buying two pieces of a firearm, will it keep me from having to pay ITARS, and get a type 7 FFL. Is it legal to do this as a Type 1 FFL. Now if someone came into the shop and bought the lower and a upper, pinned them together and sold them back, then what? I have searched and Googled, no joy. I know someone else has asked this question. Thank you for your time.