Where do you get your AR parts? I have been thinking of doing a budget build. I want a plinker 16" that will shoot every time I jerk that bang switch. The budget for this build would be $600 for everything. It is going to be a flat top with either open sights or a budget halo type sight. I have been looking at Midwayusa.com Brownells.com Spikestactical.com bravocompanyusa.com Where are some other places to get parts on the cheap. I guess I should say low cost parts. I don't want parts that will break with use. This is going to be a shoot it till it stops then clean it gun. As long as I can keep the bullets in a 4" circle at 100 yards it will be good enough.