Well it's way past time to start a new build. Especially since I bought the stripped lower back in August! And that lower is from Valkyrie Arms which I understand is made by JD Machine of San Diego. It looks good, is machined nicely and was worth the $100 at my LGS. I put in a Daniel Defense LPK and a BCM receiver extension kit with H buffer. The stock is an ACS I bought used for $75. It's been sitting around way, way too long all lonely by itself on the shelf! From Wikipedia: "Norse mythology, a valkyrie (from Old Norse valkyrja "chooser of the slain") is one of a host of female figures who decides who falls and dies in battle." Valkyrie left Valkyrie right I'll put up a picture of the completed lower later. Yesterday I ordered a BCM 16" LW midlength upper with BCG, Gunfighter 4 charging handle and MOE handguards. I have an MBUS Gen 2 for the BUIS. BCM just sent me an email that everything shipped but I haven't got a tracking number yet. This AR will basically be a clone of my Daniel Defense build from the winter of 2010/11 but I'm so happy with that rifle it makes sense to have another. I also want to see first hand the difference between DD and BCM. I was very tempted to try PSA but I know myself and later would beat myself up for not spending a little more for what I really wanted. My son-in-law will be building soon and probably will go PSA so we'll be able to compare anyway. Anyway, more pics to follow!