Def-Tec MK-9 First Defense 0.2% 12 oz STREAMThe Def Tec 5099 First Defense MK 9 Stream OC pepper spray is a High Volume Output Defense Technology Law Enforcement pepper spray. Designed to be a more economical alternative for smaller jobs than the MK 21 or MK 46, the MK 9 contains 12 ounces of First Defense's patented 10% OC solution and provides more volume and a greater distance than the smaller duty canisters. Used for all levels of policing, Defense Technology duty aerosols offer multiple