Heizer Defense, LLC is a state-of-the-art, high technology firearm company based in Pevely, Missouri, a suburb of St. Louis. Heizer Defense is an affiliated company of Heizer Aerospace Inc., a 60 year old manufacturer of fracture critical components for aerospace companies, transportation, and the military. Heizer Defense applies the same military technology to create their firearms. Heizer Defense currently manufactures a popular line of pocket pistols chambered in rifle calibers that feature interchangeable barrels. Also, recently introduced a revolutionary new CCW semi-auto 45acp & 9mm. (less)