I use as much Larue stuff as I can afford. I was purchasing their mounts before they ever manufactured an upper or complete rifle. Their ingenuity is top notch, especially the pivot mount for the 3x magnifier. IINM I believe they where the first to introduce that type of secondary mount.
Mark pulled a stupid stunt when he was at Ft. Campbell, Ky. Don't know what he was thinking but it didn't do him any favors with the SF and SOF types who witnessed it and eventually heard about it. Some Larue enthusiasts starting purchasing other manufacturers mounts.
It hasn't stopped me from purchasing more of his merchandise.
They can't sell the Dillo Dust outright. Something to do with FDA and such so it's a thrown in on larger purchases.