First Defense 1.3% Mk-9 Gel Oc Aerosol

The First Defense 1.3% Mk-9 Gel OC Aerosol is a professional-grade oleoresin capsicum dispersal system designed for law enforcement, security personnel, and authorized crowd management operations. Built by Defense Technology, a trusted manufacturer in less-lethal force options, the Mk-9 addresses the critical need for controlled, target-specific deployment in high-stress situations where precision and safety are paramount.

This gel formulation distinguishes itself from traditional liquid sprays by delivering concentrated force to intended targets while minimizing collateral exposure. The gel delivery mechanism projects a thick, cohesive stream rather than an aerosol mist, substantially reducing cross-contamination and drift to unintended persons in crowded environments. With an OC concentration of 1.3%, it delivers a potent inflammatory response while allowing an effective range extension to 18–20 feet, providing critical standoff distance for officer safety.

The trigger-handle design ensures intuitive operation under stress, and the canister is capable of delivering 24 short bursts, providing sustained capability across multiple deployment scenarios. The compact weight of 1.49 lbs and dimensions of 6 x 3 x 10.4 inches make it easy to carry and deploy in various situations. This product is ideal for scenarios requiring graduated response in correctional, tactical, and public order contexts.