Previous trademark founded circa 1977, manufacturing a variety of firearms, most notably backup pistols, 1911 style pistols, and the "Auto Mag Pistol" large frame magnum automatic pistols. After financial difficulties, the company went bankrupt. The AMT trademark was later acquired by Galena Industries Inc. located in Sturgis, SD, and held from 1999-Jan. 2001, previously located in Irwindale, CA until 1998. From 1998-2001, all AMTs manufactured by Galena Industries Inc. had a lifetime warranty, which is now void. The AMT trademark was then acquired by Crusader Gun Company, Inc., located in Houston, TX. Crusader Gun Company began limited manufacture in late 2004-circa 2015. Also see Irwindale Arms, Inc. and Auto Mag. for older, discontinued models.
Galena Industries phased out the use of the AMT name but continued to use the individual model names until 2001.
During 2005, Crusader Gun Company Inc. acquired the previous tooling of AMT - Auto Mag., and reintroduced the following models with limited production: Auto Mag II, Auto Mag III, AutoMag IV, the Back Up .380, and the Back Up .45.