The Burton Ave., Waterloo, Iowa and Monroe, Michigan locations of Advanced Heat Treat Corp. applied for and received federal firearms licenses (FFL). The company’s two other locations, Waterloo, Iowa, and Cullman, Alabama, already have FFL. Company officials indicated the driving force behind seeking the additional licenses was based on the fact that the processes conducted at each location vary and that requests were being received for more traditional heat treat methods like carburizing and carbonitriding. All four facilities now have FFL.