Yeah, because he sent it to them in that condition. He did not say S&W did that to his bolt face.

He did say, S&W sent his gun back dirty, but to his credit, he made it clear that therefore he knew they had test fired it.

Imagine if S&W sent them back clean. Then some guys guys would say .... "They probably didn't even test fire it!" whine blubber slobber waaaah .... etc.