Tanner, who is the Left handed shooter for the GearsofGuns Crew checking out the CMMG MK9 9mm AR that uses the Colt SMG 9mm Mags. Follow Me Here For all our Updates! Gears of Guns Blog: http://Gearsofguns.com Gears of Guns Reviews: https://gearsofguns.com/product-reviews/ Find us on Facebook: http://www.facebook.com/Gearsofguns Find us on Twitter: http://twitter.com/gearsofguns Find us… Read More »Video: Tanner and the CMMG MK9 9mm AR First look from a Left Handed Shooter