I just picked up a EBU serial number BG. It has a line/ridge going down the center of the chamber on the top side. It looks horrible IMO. My first BG did not have this, neither does my Son's EAS gun. The writing is also different,,but that's no biggie. Just tells me something has changed. This line makes me feel like this is a MIM part. But surely they wouldn't do that with a barrel,,,would they. It just looks so cheesy.
So do any of you guys have this line on the top side. If so, please list your serial number prefix. Or did I maybe get a part that got a finishing step missed. Thanks.