First Defense 360 CS MK-9 Gel Aerosol

First Defense MK-9 CS

The First Defense 360 CS MK-9 is a large-format aerosol irritant from Defense Technology, built for crowd management and cell extraction where a single operator needs reach and volume. It discharges CS, a tear agent that causes burning eyes, streaming tears and respiratory distress, and the 360 valve lets you deploy it at any angle, including inverted. The pistol-grip body and flip-top safety are built for fast, deliberate use by corrections and law enforcement personnel.

Features

• CS Chemical Agent — Loaded with CS, a tear agent (ortho-chlorobenzalmalononitrile) that irritates the eyes, skin and airway on contact.
• 360-Degree Valve — The valve fires in any orientation, including upside down, so a subject below or beside you can still be covered.
• MK-9 Format — The MK-9 is a high-volume canister sized for sustained deployment rather than the short bursts of a pocket unit.
• Gel Aerosol Delivery — The gel formula throws a heavier stream than a fogger, cutting drift and blow-back toward the operator.
• Pistol-Grip Actuator — The molded grip and trigger give a steady hold and controlled discharge under stress.
• Flip-Top Safety — A hinged safety cap with a pull-ring guards against accidental firing until you are ready.
• 12.3 oz Net Weight — The canister holds 12.3 ounces of agent and averages about 30 one-second bursts.
• EDW Tested And Safe — Tested for use alongside electronic discharge weapons such as a TASER, confirming the propellant is non-flammable in that setting.
• Defense Technology Build — Manufactured by Defense Technology under its First Defense line for duty and institutional use.

Build And Use

The steel canister carries 12.3 ounces of CS agent with a pistol-grip actuator and a flip-top safety cap keyed by a pull-ring. The 360-degree valve is the defining feature: most aerosols stop spraying when tilted past level, while this one keeps delivering at any angle, which matters during ground fighting or cell extractions. It is intended for trained law enforcement and corrections use, and local laws govern who may carry a CS product.