Looks cool. Thought it might be a gimmick, but after watching video, I see some merit in it. I'd love to try one before buying.
http://www.thefirearmblog.com/blog/...ent=2016-07-09&utm_campaign=Weekly+Newsletter
http://www.thefirearmblog.com/blog/...ent=2016-07-09&utm_campaign=Weekly+Newsletter