Good video! I have shot many of these guns and own 2 of the Extrema 1's. The 1 doesn't have the "kick-off" recoil reducer in the butt stock but is still a very smooth, low recoil shotgun.
The best thing about either of the Extrema's is that they will shoot a standard 2 3/4" shell, a 3" shell, or a 3 1/2" shell and will still cycle correctly and never miss a beat.
I own a private duck club and when I hunt, I always have both of my Extrema's with me. I load one with 3" duck loads and the other with 3 1/2" goose loads as we get both at any given time on our ponds.