I have a pretty good idea what I want but I haven't been able to find it configured from a manufacturer the way I want. I am very limited on knowlegde of A/R's by the way and have never owned one. So I'm not picky on brand names but would like something that is solid and a good platform but would like to keep the weapon under 1k. I'm wanting a flat top receiver with a bull barrel that is about 14-16 inches with a free floated hand guard with a quad rail. I don't need extreme accuracy but would like at least 1 moa. Something I can shoot out to 300 yards maybe but is plenty maneuverable for self defense stuff. I thought about putting one together myself ... How difficult would it be for someone that is a rookie ?