LUTH-AR has them, and so does JSE:
JSE
Stripped if you want to Cerakote it; although the JSE is a better deal.
JSE
A1 AR15 Slick Side Upper Receiver - Assembled w/ Rear Sight & EJ Assy
Please view details for more information.
www.jsesurplus.com
Stripped if you want to Cerakote it; although the JSE is a better deal.
Slick Side A1 Upper Receiver, Stripped | Luth-AR
Slick Side A1 Upper Receiver, Stripped The Luth-AR Stripped Slick Side A1 Upper Receiver is made from 7075-T6 aluminum forgings machined to final dimensions. Correct early-style carry handle contours with A1-pattern rear sight housing. Please note these are marked for retail only in order to get...
www.luth-ar.com