What many wanted was to make any AR a folding stock AR; they could have any upper or lower or stock they wanted. The concept of the Law is simple; it's a hinged adaptor that allows you to make any traditional AR a folding stock rifle. The Law adapter body includes a set screw to prevent loosening and a QD attachment for a sling if you want to run one there. After a combined 1000+ rounds fired, I've yet to experience any issues with the functionality of the Law adapter. If you want a folding AR platform, the Law really is the best option because it makes any AR a folder.