I got around to installing the 310VT GG mount in my 2007 XUV 850D John Deere. Here are some photos. I had to install it on the right side of the passenger foot well area due to the gator frame rail that runs under the floorboard on the left side of the passenger foot well.
It actually worked out better as a passenger can sit more comfortably where it now resides. Although they would have to straddle the gun, but as you can see from the pics it works.
My AR was almost too tall for this install this way, but with the stock collapsed all the way it fit perfect with the barrel end holder angled up at about 25 degree’s from horizontal.
Tim from Florida