The resistance of body armour to penetration from commercial or street weapons, such as knives or spikes, can be assessed with the Stab Test Apparatus designed to meet international law enforcement and military standards. The system provides the ability to test soft and hard armour meeting the stringent specifications from the U.S. National Institute of Justice (NIJ) and the U.K. Home Office Development Branch (HOSDB). Recent enhancements were made to adapt to hand-made threats found in correctional environments and to improve testing variability. Add-on hardware for slash testing has also been implemented in anticipation of meeting the latest ASTM standard for slash resistance as based on the HOSDB test methodology.