personally, once you've got a couple of complete AR's, I wouldn't bother with buying any more lowers, just working on stuff that requires an upper swap. Less serial #'s with your name on em

grabbed a philipino 1911 commander clone friday and ran 150 rounds through it today. wonderful shooter, just need to get some adjustable sights to get the groups from the 7 o'clock to the bull. wife needs to get some more time behind it too (its actually what she'll be carrying) but gonna have to work up some lighter loads first. that short barrel is rough on the hand :( especially for someone her size, lol
My AR has no ties to my name officially. Paid cash for the lower with no paperwork.