First Defense 360 .4% MK-3 Stream OC Aerosol

MK-3 Pepper Spray

The First Defense MK-3 is a compact OC pepper spray from Defense Technology, sized to ride on a belt, in a pocket, or in a patrol bag. OC stands for oleoresin capsicum, the pepper-derived agent that causes the eyes to clamp shut and the airways to burn, giving you time to move away. This is the .4% strength version, loaded with a 360-degree valve so it fires at any angle, even upside down, and carries a stream pattern for reach and accuracy at distance.

Features

• .4% Major Capsaicinoid Content — The label figure refers to the concentration of the active capsaicinoids, the compounds that actually cause the effect, rather than the raw pepper percentage.
• 360-Degree Valve — The canister discharges in any orientation, including inverted, so it works in a ground fight where you cannot hold it upright.
• Stream Pattern — A focused liquid stream reaches farther than a fog or cone and resists blow-back in wind better than a mist.
• 1.47 oz Net Weight — A pocket-sized fill that still delivers an average of 6 to 8 short bursts per can.
• Flip-Top Actuator — The hinged safety cap flips clear of the nozzle before firing, guarding against accidental discharge in a pouch.
• EDW Tested And Safe — Tested for use alongside electronic discharge weapons, meaning the propellant will not ignite when a Taser-type device is deployed.
• First Defense Formula — Defense Technology's First Defense line is the OC blend issued to law enforcement and correctional agencies.

Who It Suits

The MK-3 .4% sits in the middle of Defense Technology's strength range, between the lower-concentration training and softer-effect cans and the heavier duty loads. It suits officers, security staff, and private carriers who want a proven, agency-grade OC spray in a size that carries easily. Check your state and local laws before buying, since pepper spray sale and carry rules vary by jurisdiction.