Theres a place i got on from the have ads in the Shot gun News " Sherluk marketing" that has been attending our gun shows here in Pittsburgh, Pa for years and they sell a very nice parts kit. I just recived a E2 rifle kit with the 20" upper all assembled with all the bolt ETC in it. They sell a 20" abd a 16" car for $424.95 Plus shipping all you need is a stripped lower Reciver.