Sirex
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Thank you for the info. My BCA is primarily 7.62x39, with a standard 5.56 upper in the cabinet waiting for the heavy barrel installed before I can mount it. My Colt hasn't been separated yet completely, and will primarily stay 5.56. I was looking for a 7.62x39 upper for it, just for recreational shooting. The Colt will probably be handed down one day, and thought having another genuine Colt upper to go with it would be really nice. Kinda trying to look forward. I asked the seller if the bore is chrome lined and he doesn't know, but it looks like it might from the muzzle pic. He says he bought it years ago, and shot it only a little, then stored it. Says now its banned, (CA).