Thanks for the PMs. emails, and posts.
I've seen pics of the Knob Creek shoots, and was trying to find a forum or web site where the members of that particular community (MG collectors/shooters) congregated...
I could just post it on eBay or GB if all I was interested in was a high price...but this goes into detail and is written in a very user-friendly format, pretty much for the layman rather than a school-trained armorer...
My old unit [9th Motors/3rd Mar Div] had four M2 MGs w/tripod mounts; and about a quarter of our 5-ton trucks had the ring mount over the cab...but our armorer was 2nd echelon only; we never got into rebuilding them (I got stuck helping/relieving him quite often)...