brassslapsInteresting piece for sale. It's a 7.5" upper with a shaved upper and unmarked square drop AAC handguard. As far as I know, square drop handguards never made it to the commercial market without AAC markings, such as the XM15 under bushmaster before the bankruptcy. Looks to be a remdef project upper. If you know otherwise, would love to know. Either way I'm selling off all my remdef related stuff. Most is gone, now selling off my parts.
