Disclaimer: This article will discuss the process of completing an AR-15 80% lower with common tools found in most hardware stores.A provision in the Gun Control Act of 1968, 18 U.S.C, Chapter 44 states that an unlicensed individual can make a firearm for personal use, but not for the intent of sale or distribution.Said firearm must conform to N.F.A standards and you must be legally able to be in possession of a firearm.