I bought this item intending to put it on my "end of the world rifle", along with other parts billed as highly resistant to wear, the elements, etc. While I understand this is more geared toward gnarly full auto burns, I still felt it merited a test. I don't own anything full auto, so I can't speak to that, but it seems like this gas tube is not mil spec dimensions, meaning it did not fit in two of my three upper receivers. This was a drag because the thing costs an arm and a leg, and didn't want to work with other high end parts. Probably a mistake on my part, didn't even consider the possibility that the coating made the diameter too large, but lesson learned. From now on, I'm going with a melonited tube for like $50 less. YMMV, of course.
Reviewed by: Nathaniel from Ohio on 5/9/2015