The First Defense series leads the industry worldwide with premium OC sprays used by law enforcement and corrections agencies. Defense Technology’s MK-46R 1.3% Red Refill is no exception. The refill contains 46-ounces of their signature pepper spray formula and is designed for compatibility with the popular MK-46 crowd control system, in both the horizontal MK-46H and vertical MK-46V configurations. This particular formulation contains 1.3-percent major capsaicinoids, the highest intensity available in the series, making it the perfect crowd control option in a high-intensity, tactical environment. Active agent levels are verified through independent laboratory testing, guaranteeing accurate strength.