List of online dealers and sellers of parts and accessories.
As the title states i think there should be a sticky of the possible online stores and dealers of anything ar-15 related. This would really help newbs into building their own. So if you can post any places you know of or you have done business with before.
I have bought everything I need (receiver parts U & L) from Brownell's. I have dealt with them for years. I have found that the best deals aren't always @ gun shows. Watch out for used or rejected parts some parts guys are selling.