The AR-15 is a better rifle in terms of hunting and sport shooting. Several Gun Builders have opted to personalize such guns for a better experience. They use a bunch of accessories to do the necessary process. Components such as lights, sights, slings, etc. can be changed according to our own. It is a perfect gun for those who are new to firearms. For a custom AR-15 build, you'll have to start with the upper receiver. Such receivers are present in both stripped and barreled front. But using a stripped version gives you an edge as it is suited for hunting.