I have a dozen AR's. From top end to bottom end, They all function as their supposed to do. Weapons companies are like auto companies, there are many different kinds made for many different kinds of people. Weapons you hope don't break down when you really need them, like cars, you hope they really don't break down when you need them. Buy what you can afford and go from there, and keep adding to them till you don't have room to park anymore.