How to Build AR-15 Gun?

One of the essential aspects of the AR-15 is personalization. You can add different kinds of accessories and elements to the weapon. It, in turn, converts the gun into some enhanced entity. So, you may wonder what all you can do to upgrade the weapon. Among all the entities, the AR-15 customization seems to be more vital. Firstly, you need to choose the right lower receiver and then register it with the ATF. Once you get the number, you can start to use it without further complications. Find possible solutions to rectify the problem.