They didn't put it under the scope, but they did have an expensive AR with a similar round count as a control. "Asian Phil" mentions it a few times while they're talking about the dimensions on the PSA parts. IIRC, it was a Knight's SR-25, and it was markedly better.But i would be interested in seeing how a Colt or one of the other rifles mentioned later in that video would look like under a borescope too (BCM, LMT, etc. ) after 5k rounds to provide a control