Ok guys, I've been looking at the. S&T TAR-21. JG AUG civilian. Now, I know the Tar-21 has a plastic GB shell, but metal internals. The AUG has full metal which is nice. Also I like that the TAR-21 can take M4 mags. My price range is about $150. I don't have to get a bill pup I just like them. I don't like M4 or G36 variants.