I’ve heard the early Gen1 APC223 had teething issues with extraction. I can’t find specifics, nor can I find when the issues got fixed but it seems like they were addressed by the factory. Does anyone here know anything about this?

There were some cracked bolt carriers early on as well. Believe it all got sorted

Do you know what serial numbers it was worked out? I’m looking at a 20-xxxxx purchase and trying to figure out if that’s past the time issues surfaced.