First Defense 1.3% MK-2 Foam OC Aerosol

The First Defense 1.3% MK-2 Foam OC Aerosol is purpose-built for law enforcement professionals who need reliable, fast-acting self-defense protection in a duty belt-compatible package. This Defense Technology aerosol delivers consistent, manageable bursts in real-world patrol and protective operations where space is limited and accessibility is critical.

Designed for officers who prioritize both effectiveness and practicality, the MK-2 combines proven oleoresin capsicum (OC) technology with an innovative foam delivery system that reduces overspray and collateral exposure. Upon deployment, the 1.3% OC formula expands into a thick, sticky foam that adheres to the suspect's face on contact, maximizing ocular and respiratory irritation while minimizing airborne drift that can affect the officer or nearby civilians.

Each cartridge produces 5–6 short, controlled bursts with an effective range of 10–12 feet—sufficient for most tactical encounters without requiring close approach. The compact form factor and lightweight design make it ideal for extended wear on a standard duty belt, where it remains accessible without adding bulk or creating discomfort during long shifts. Patrol officers, security personnel, and tactical teams benefit most from the MK-2's balance of power and practicality.