First Defense Pepper Spray Stream MK4 3 Oz .2%
First Defense Pepper Spray Stream MK4 3 Oz .2%
Out of stock
Stay prepared with the First Defense® MK-4 OC Pepper Spray, designed for law enforcement, security professionals, and personal defense. This duty-belt ready aerosol delivers a powerful, target-specific stream with reliable standoff distance while minimizing cross-contamination. Featuring both .7% Major Capsaicinoids (MC) and MK-4 3 oz (.2% formula option) configurations, this pepper spray ensures consistent performance, heat reliability, and safe deployment in high-pressure situations. Built for reliability, control, and real-world performance—trusted by professionals for everyday carry and critical response situations.
Key Features:
3 oz MK-4 canister designed for duty belt carry and quick access in the field
Stream delivery pattern provides precise targeting with reduced blowback and cross-contamination
Effective range of 10–12 feet with approximately 20–25 short bursts per canister
Available in .7% MC (Major Capsaicinoids) for verified heat strength and consistent performance
Also available in MK-4 .2% OC formulation option for controlled deployment needs
Non-flammable, EDW-safe formula compatible with electronic control devices
Flip-top safety actuator prevents accidental discharge while allowing rapid thumb activation
Manufactured in an ISO-rated facility ensuring quality, safety, and compliance
Ideal for law enforcement, security officers, corrections, and personal defense applications
Finding the right fit ensures comfort, performance, and a professional look. Use a cloth measuring tape and follow these simple instructions to get the most accurate measurements.
How to Measure
Headwear: Helmets, Caps, Hats
- Measure completely around the head, 1" above the eyebrows in front, and around the largest point at the back.
Chest/Bust
- Measure just below the arms, across the broadest part of the chest.
- Keep the tape firm and level for accuracy.
Neck
- Take a shirt that fits well and lay the collar flat.
- Measure from the center of the collar button to the end of the buttonhole.
- The number of inches = your neck size.
Sleeve Length
- Measure from the center of the collar (back), across the shoulder, and down the sleeve.
- Your arms should be at your side.
- The number of inches = sleeve length.

Pant Measurements:

Women’s Hips
- Stand with heels together and measure around the fullest part of the hips.
Inseam (Pants)
- Take a pair of uniform pants that fit well.
- Measure from the crotch seam to the bottom of the pants leg.
- The measured length will be your inseam size.

Belts
- Order 2" larger than waist size.
- Belts come in even sizes. If between sizes, choose the next larger size.
Gloves
- Measure around the dominant hand at the fullest part (excluding the thumb).
- The number of inches = your glove size.

Materials & Care
Materials & Care
Backorders Available
Backorders Available
Out of stock? No problem. We allow back orders on most items. Select the style and size and Submit a request.
Our team will confirm availability and delivery timelines.
Or call us (562)-336-1540
Or email sales@iuniformsolutions.com