Wikipedia
CRISAT
CRISAT, short for Collaborative Research Into Small Arms Technology, is a series of NATO study, identify and define threats for standardizing the manufacture of contemporary military equipment. The CRISAT target is defined as a 1.6 mm titanium (UK IMI Ti 318) plate supplemented by 20 layers of Kevlar (UK/SC/4468) as defined in STANAG 4512. This target is intended to replicate the personal protection used by former Warsaw Pact countries, and it is still used as a reference. The CRISAT target will stop the commonly used 9×19mm Parabellum full metal jacket cartridge, but it is pierced by the newer 5.7×28mm and 4.6×30mm personal defense weapon cartridges at ranges in excess of 200 meters.