A buddy of mine just gave me this upper:
https://4.bp.########.com/-Ln9-ysY5554/WeK3SPLL7oI/AAAAAAAAqrs/_lrSJmuwtwEgXTPaqfSXb6p44TxeDjJVACKgBGAs/s1600/PA142345.JPG
Looks like an HBar, but no clue of the make. Might be Olympic Arms.
https://3.bp.########.com/-Ekfc9HdKd0I/WeK4D4JhUSI/AAAAAAAAqsE/SanIXLJ0Aish1hD8hCSTep0IB_KqjFTmgCKgBGAs/s1600/PA142368.JPG
I'll have to find a lower for it, but I threw it on my SR15 lower just to see how it would look:
https://4.bp.########.com/-9oMcgBxl2Fg/WeQDUlC-tiI/AAAAAAAAquw/NnhUDJxpc40k4i5K5eb0fEezrif-btg9QCKgBGAs/s1600/PA152387.JPG
I kind of like it. All my other ARs are flat tops, so I'm digging the retro look.
https://2.bp.########.com/-mFeQM4Vme-Q/WeQDUk02asI/AAAAAAAAquw/ZvlBMdKf5iwthEz1h8WV-IU8RROYklaawCKgBGAs/s1600/PA152392.JPG
With my other 20" ARs
https://2.bp.########.com/-Al4CicXefNk/WeQDUnb_0bI/AAAAAAAAquw/Tcgd46HKXEkN4p_CaswHhgrj_66m2wX9wCKgBGAs/s1600/PA152399.JPG