What Are Level 4 Body Armor Plates? A Comprehensive Guide
Level 4 body armor plates are probably the gold standard for protecting oneself from high-threat ballistic threats. Level 4 armor plates provide heavy-duty protection against the worst and most penetrating threats, even armor-piercing rounds. But what are Level 4 body armor plates, and how do they perform? Here, we will deconstruct all that you should know regarding Level 4 body armor plates—what they are, the materials utilized, their rating system, and how they contrast with other levels of body armor.
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Why Do You Need Level 4 Body Armor?
Level 4 body armor guards against some of the most dangerous threats in combat or hostile situations. Although lower levels of body armor can provide general protection against handgun rounds or low-velocity threats, Level 4 plates are designed for high-risk situations.
Body Armor Levels
Body armor plates are rated and tested to determine their resistance to different kinds of ammunition. The National Institute of Justice (NIJ) is the major organization that regulates body armor, including rating systems and testing procedures.
The body armor ratings go from Level I to Level IV, each describing protection against different ballistic threats.
Level I: Stops small, low-energy handgun rounds.
Level II: To prevent more high-velocity handguns.
Level III: To protect against more powerful handguns and a few rifles.
Level IV: To provide the highest level of protection, including armor-piercing bullets
Level 4 body armor plates protect against high-velocity, armor-piercing bullets. Thus, military personnel, law enforcement officers, and security experts often utilize them in dangerous situations.
What Are Level 4 Body Armor Plates?
Level 4 body armor plates stop harmful threats such as armor-piercing (AP) rounds. They are produced to endure the intensive impact and penetration of rounds capable of easily breaching lower-level armor.
Features Of Level 4 Plates
Level 4 armor plates consist of strong, dense material that can dissipate and absorb the energy from a projectile. These plates are usually ceramic or composite, which are both noted for their efficiency in stopping high-powered rounds.
- Ceramic Armor Plates: These plates are usually made of silicon carbide or boron carbide. Ceramic is extremely hard and efficient at disintegrating incoming rounds upon impact.
- Composite Armor Plates: These plates combine materials, such as aramid fibers (e.g., Kevlar) and ceramics, to create a multi-layered protective structure. The outer layers absorb the impact, and the ceramic core stops the round from penetrating.
- Armor-Piercing Ammunition Protection: This is the best aspect of Level 4 armor. Unlike other armor levels, it can pierce rounds that are made to penetrate the majority of conventional body armor.
- High-Risk Situations Confidence: Police officers and military personnel who work in conflict or high-intensity gunfire regions have confidence in Level 4 plates for maximum protection.
- Durability: Level 4 armor plates can absorb multiple hits, depending on the plate and the type of threat.
The primary function of a Level 4 plate is to prevent the penetration of a .30-06 armor-piercing round. This round is infamous for its ability to penetrate steel and other mediums. This is one of the most popular high-threat rounds that security and military personnel must be ready for.
What Materials are Used to Produce Level 4 Armor Plates

The materials used to construct Level 4 body armor plates play a major role in withstanding high-velocity rounds. Some of the most widely used materials in producing these plates include:
Ceramic Materials
Ceramic plates are also strong and can stop high-caliber bullets. When hit, they shatter, absorbing and distributing the bullet’s kinetic energy.
They usually contain materials such as boron or silicon carbide, which are extremely hard and efficient at stopping high-energy projectiles. However, they are more prone to breakage and are often mixed with other materials to reduce the risk.
Composite Materials
Composite materials blend various fibers with ceramic or steel layers, including Kevlar, Spectra, and Dyneema. The fibers’ blending dissipates the bullet’s energy, while the ceramic or steel layer shatters the projectile.
Composite armor plates are lighter than ceramic plates, allowing the user to move more easily while still offering excellent protection.
How Are Level 4 Plates Tested?

The National Institute of Justice (NIJ) tests Level 4 body armor plates using rigorous protocols. These tests simulate real-world ballistic threats and assess the plate’s ability to withstand multiple rounds of high-velocity ammunition.
The testing involves shooting a series of rounds at the armor plate, including a .30-06 AP round designed to simulate the kind of armor-piercing threat a military personnel or law enforcement officer might encounter.
The plate must successfully stop the round from penetrating while also preventing the bullet from causing severe trauma to the wearer. This testing ensures that Level 4 plates offer reliable protection in high-risk situations.
What Plate Carriers to Use with Level 4 Body Armor?
When selecting plate carriers to pair with level 4 body armor plates, it’s crucial to ensure they are compatible in terms of size, weight, and durability. The best level 4 plates are typically heavier, so you need a carrier that securely holds the added weight while allowing for comfort and mobility. Look for Level IV body armor carriers made from strong, lightweight materials such as MOLLE webbing or CORDURA fabric.
What do Level 4 Body Armor Plates Stop?
Level 4 body armor plates provide one of the highest levels of protection available, designed to stop powerful rifle rounds and other high-powered rounds. According to NIJ (National Institute of Justice) testing, level 4 plates can stop rifle rounds at distances of 15 meters or less. The following bullets are effectively stopped by Level IV body armor:
- 7.62x63mm M2 AP (.30-06): A highly destructive armor-piercing round often used in military rifles.
- Premier Body Armor’s level IV plates have been tested to withstand the following additional rounds:
- 7.62×39 123gr PS Ball (MSC)
- 7.62×51 147gr FMJ (M80) – up to 2850 ft/s
- 5.56×45 55gr (M193) – up to 3150 ft/s
- 5.56x45mm 62-grain steel core (M855)
- 5.56x45mm M855 A1
These level 4 ballistic plates are designed for use in high-risk environments and protect against some of the most powerful rounds. When considering your level IV plates, it’s also important to verify that they are legal in your jurisdiction, as level 4 plates may be legal in certain areas but not others, depending on local regulations. Armor plates level 4 provide essential protection for tactical and military applications, but it’s crucial to ensure proper fit and coverage.
Level 4 vs. Level 3 Armor Plates
While both Level 3 and Level 4 body armor plates provide excellent protection, there are some key differences between the two.
Protection Level
- Level 3 plates are designed to protect against rifle rounds, such as 5.56mm NATO and 7.62mm NATO. While they can withstand high-velocity rounds, they do not provide the same protection against armor-piercing ammunition as Level 4 plates.
- Level 4 plates offer superior protection against armor-piercing rounds like the .30-06 AP, designed to penetrate armor.
Weight and Durability
- Level 4 plates tend to be heavier than Level 3 plates due to the materials used (ceramic or composite). While this extra weight can reduce mobility, the trade-off is superior protection from high-powered threats.
- Level 3 plates are lighter and offer better mobility, making them suitable for situations where speed and agility are important.
Choosing The Right Level 4 Armor Plate
Selecting the right body armor plate depends on your specific needs and the environment you’ll be in. Some considerations include:
- Weight: A lighter plate might be preferable if you wear the armor for extended periods, even if it sacrifices some protection.
- Plate Type: Ceramic plates offer excellent protection but can be brittle. Composite plates are lighter and can be more durable under different conditions.
- Protection Needs: If you need protection from armor-piercing rounds, Level 4 armor is necessary. If you’re only concerned about general rifle threats, Level 3 may be sufficient.
Conclusion
Level 4 body armor plates are designed to offer the highest level of protection, capable of withstanding armor-piercing rounds and the most severe ballistic threats. Understanding the materials, testing processes, and key features of these plates can help you decide on your protective gear. Level 4 armor provides unmatched defense against the most dangerous threats, whether in law enforcement, the military, or if you need personal protection in high-risk environments.
Frequently Asked Questions
Are Level 4 plates heavier than Level 3?
Yes, Level 4 plates are typically heavier due to the materials used, like ceramic or composite layers, which offer superior protection against armor-piercing rounds.
Can Level 4 body armor stop all bullets?
While Level 4 plates are designed to stop the most dangerous threats, no body armor can guarantee 100% protection from all types of ammunition. However, they offer the highest level of defense available.
How do bulletproof vests protect civilians?
Bulletproof vests designed for civilians offer essential protection against various types of firearms and fragments. The construction of these vests follows rigorous standards, ensuring they are resistant to bullet impact and fragments. The combination of materials used in these vests provides optimal coverage and balance, reducing the risk of damage while maintaining comfort and safety. Advancements in technology have led to lighter, more flexible vests that offer enhanced protection without causing fatigue.
What are the benefits of wearing a Level IIIA bulletproof vest?
Level IIIA vests are known for their capability to resist high-velocity rounds and fragments. They offer a variety of coverage options that protect vital organs and reduce the risk of fatal injury. The size and shape of these vests are designed to provide comfort without compromising protection, ensuring a balance between safety and wearability. With continuous advancements in materials, these vests provide enhanced damage resistance and tear protection, while offering greater protection against firearms.
