Just for information. I was at Steel's Gun Ship in Lewis and noticed he had a 1919A4 Semi. 308. Looks new. He said it comes with 2 tripods, links, 20rd. belt loader and other spare parts. Not a home built. I am not sure, but I think he is asking around $3000 with everything.
JD Defense, Georgetown, DE has 20 and 30 AR mags in stock. I think the price is around $40, but no sure. Had some in stock today when I called. I took my CCW course with him. Great to do business with. Phone is 302-856-6910