While I agree this was a very well done documentary. And I did support it a little via kickstarter, it seems that not everyone in the industry approves of the movie.
I supported it, as well.
But... as soon as I was finally able to watch the film (after the discs shipped), I posted my 'rewards' (including the DVD) in the "Freebies" section of another gun forum and sent them to someone that hadn't seen the film.
I don't remember what irritated me so much about the film, but I do remember being sorely disappointed.
We all have our own opinions... even if we can't remember what they are, sometimes.