Sisu Arms
Defense

SISU ARMS is a Missouri-based maker of combat-representative training equipment for military, law enforcement, and first responders. Its flagship product, the HEAT/SIG Thermal Imaging Target System, solves a long-standing gap in training: governments invest billions in thermal optics, yet elite units often train against targets that don't produce a realistic heat signature. HEAT/SIG's patent-pending design delivers a persistent, lifelike thermal signature for four-plus hours per use. It needs no electronics, batteries, wiring, or thermal paint, resets in seconds, and works day or night in any weather. Built with AR-500 steel strikefaces and available in multiple target styles, the system is informed and field-validated by former special operations and law enforcement professionals, and is made in the USA.