I've got a .308 ar 10 build ive had before the safe act and never finished. It started as a 16" standard rifle kit. Since then it has just been a box of parts. Bought the original thordsen. Just been a box of parts. Since I have an extra receiver I was thinking of finally finishing this featureless build and then just put the rest of the parts on a fixed mag build. So if I could find a stainless barrel without threads I'd buy it for the featureless and use the threaded barrel for the fixed mag.