Well ok not really free, but close enough. A friend of mine has commissioned me to build him an AR15 and has given me $1000 to do so, now I know about the legality of this so I'm just picking out parts and he is buying the lower and assembling. I'd like some suggestions on what to build, he has some pretty loose guidelines and has given me creative freedom. Anyway, he has stated that he would like a mid-length 16" in 5.56 with flip up sights, a free float handguard or rail and a Vltor stock. Everything else is open. Anyone have any suggestions on parts? I plan on using PSA as a base. He intends to run an Eotech 512 later if it matters. Thanks guys.