FAQ
What does NIJ Level IV mean, and how is it different from other levels?
NIJ Level IV is the highest level of ballistic protection defined by the National Institute of Justice (NIJ). Armor rated at this level is designed to stop armor-piercing rifle rounds, such as the .30-06 APM2. This makes it ideal for military and high-threat law enforcement use. Compared to Level III (which stops standard rifle rounds like 7.62mm NATO), Level IV offers superior protection but may be slightly heavier due to its reinforced materials.
Are your armor products NIJ certified?
Yes. All Delta Defense armor products are independently tested according to the latest NIJ standards (such as NIJ-STD-0101.07). They undergo rigorous testing to ensure protection against specific ballistic threats and meet or exceed required performance benchmarks.
Can your plates stop multiple shots?
Absolutely. Our armor plates are tested for multi-hit capability under NIJ protocols, meaning they can withstand multiple ballistic impacts without penetration, maintaining their protective integrity.
Are your products tested in wet conditions?
Yes. Many of our armor products, including Level IV plates and ballistic helmets, are tested both in ambient and wet conditions to simulate real-world environments, ensuring reliable performance in all-weather use.
How do I choose the right armor level for my needs?
It depends on your threat level.
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For everyday protection against handguns: Level II or IIIA soft armor is recommended.
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For patrol or tactical rifle threats: Level III or RF2 hard plates.
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For high-risk environments with armor-piercing threats: Level IV or RF3 plates are ideal.
How to measure your body to determine the appropriate size of ballistic-resistant body armor.
To determine the appropriate size of ballistic-resistant body armor, accurate body measurements are essential. Begin by measuring your chest circumference at the fullest part, keeping the tape snug and level under your arms, as this determines the width of the front and back panels. Next, measure your waist at the natural waistline—just above the navel—to ensure the vest won’t restrict movement or press uncomfortably when seated. For proper length, measure from the top of your sternum (suprasternal notch) to about an inch above your navel to avoid interference with sitting or bending. On the back, measure from the base of the neck to the belt line to ensure adequate coverage without overextending. Properly fitted body armor should cover vital organs like the heart and lungs while allowing full mobility, and it should not extend past the waist when seated. Always refer to the manufacturer’s sizing chart, as sizing can vary between brands, and consider choosing the larger size if you’re between measurements for better adjustability.
Learn more about how to measure