MARS, Inc. is a firearms research and development company based in Montana. We design, test, and field groundbreaking firearms technology for military applications and public consumers. MARS has developed a revolutionary, patented hybrid operating system called the Integrated Piston-Recoil Operating System - IPROS .  IPROS virtually eliminates recoil for high-powered calibers, without the extra weight and bulk of traditional recoil mitigation techniques.  (less)