Red X Defense's XCAT narcotics, gunshot residue, and explosives detection system weighs only one pound and is field-ruggedized. You insert a test card with a sample on it and the system gives users a red light or green light result. You can use it to test powders, pills, liquids, and even residue on a spoon or in paraphernalia. It's made to be affordable and easy to use. The XCAT has been tested and validated by independent labs and fielded for over a year, and it's used by agencies in over 30 states and 10 countries.