I've been to the offices and the production facility in Greeley. They spent a good part of the day giving my buddy and I a tour, took us to lunch, it was a good time. There's some great folks there. Everyone was super friendly.
We didn't go into the clean room where final assembly occurs, but it has windows all along it, so we could see what they all were doing. We also visited with the folks who do the final QC inspection. It's pretty detailed. I don't see how it could be done by any means other than the human eye.
The recent issue that got so much mileage wasn't really a QC issue in the manner a lot of folks believed. There was definitely a breakdown by an individual in customer service. But the scope issue that uncovered wasn't something you catch in the QC inspection. The glue was breaking down, not curing properly, not to spec, something wrong with it. They had no way of knowing it wouldn't perform as it had for years in the past. Not until it was reported by scope owners. Normally there is a grease inside the scope tube to capture that dust or debris, but it's not foolproof.
This is a common problem. Search this forum and you'll find these issues reported by USO, Vortex, Nightforce, and S&B. Probably just about everyone. It happens, it's hard to catch. Luckily, they figured it out and corrected it and not too many optics were affected by it.
I think the big takeaway for Burris folks was the CS end. They learned they need to have better oversight on ole' Olivia and make sure it's not tequila night..