Armor Technology, Blog

UL752 Bulletproof Glass

There are 8 levels of UL572 bulletproof glass.  Citizen Armor focuses on Level 2 and Level 5 of the UL572 standard.  Level 2 is rated to stop handgun rounds, while level 5 is rated to take a single rifle shot.  This standard of bullet resistance is relevant for both vehicle armor and building armor.  The UL752 rating system helps understand ballistic protection levels for glass. 

Truth In Bulletproof Terminology

The truth is that no product is 100% bulletproof.  Each product is bullet resistant up to different levels of threats.  Products are designed, tested, and designated into categories of ballistic performance.  The Underwriter’s Laboratory (UL) sets forth the UL752 Standard for Bullet-Resisting Equipment.

UL752 Ratings Do Not Allow Spalling

The UL752 specifications do not allow for spalling.  Spalling is the deformation and fragmentation of a material such as glass after an impact.

“1.2 As used in these requirements, the term “bullet-resisting” signifies that protection is provided against complete penetration, passage of fragments of projectiles, or spalling (fragmentation) of the protective material to the degree that injury would be caused to a person standing directly behind the bullet-resisting barrier.” –

To be certified as UL752 compliant each product must be tested to offer absolute protection.  If a product spalls after impact and the shrapnel that could injure occupants of a building or vehicle it will not pass as a UL752 certified product.  

UL752 Level 2 Specifications

Level 2 is designed to withstand the impact of .357 magnum jacketed lead soft point projectiles.  This level also protects against the 9mm and .22 caliber projectiles.

UL752 Level 5 Specifications

Level 5 is rated to stop a full metal copper jacket 7.62mm rifle with a lead core. This means it is also designed to stop the ever popular 308 Winchester.

UL752 Ratings Are Not Always Rankings

Ratings,, follow a system of levels that build upon one another.  For example level 2 being superior to level 1 and so on.  The UL752 system does not always work this way.  

For levels 1 to 3 each progressive level is superior to the others.  Once a product is rated above these levels the standard varies.  Just because something is rated to withstand a level 8 threat it doesn’t mean it meets the standard for level 7 automatically.  It is important to evaluate the level of expected threats and install the right type of bulletproof glass product. 

Contrary to expectation, the UL752 system isn’t a matter of rankings but rather a way to describe products. This helps you, the consumer, choose the right type of bulletproof glass product for your application. 

Get Armored With Citizen Armor

Let us help you choose the right bullet resistant glass for your vehicle or building.  We specialize in providing the protection you expect for commercial buildings, guard booths, civilian vehicles, armored transport vehicles and more.  

Armor Technology, Blog

What Are Bulletproof Vests Made Of?

Bulletproof vests are made from a variety of high tensile strength fibers.  What is inside of a bulletproof vest depends on the manufacturer.  Manufacturers of bulletproof vests use various high strength materials, such as aramid fibers, carbon nanotubes, polyethylene and graphene microfibers. These fibers are combined into layers to increase the ballistic properties.  The polyethylene used in bulletproof vests is an Ultra High Molecular Weight Polyethylene (UHMWPE).  UHMWPE was originally developed to be used in replacing steel belts in tires.  This makes it a great material for bulletproof vests due to its strength and hydrophobic properties.  We’ve come a long way since the first bulletproof vests were made of silk.

Vests made with UHMWPE are not only waterproof but offer cost effective ballistic protection.  There are 5 levels of ballistic protection recognized by the National Institute of Justice. The levels are IIA, II, IIIA, III, and IV.  The lowest level of protection is a level IIA.  As the level of protection a vest provides increases up to level IV so will the quality of the materials, the weight, and the cost of bulletproof vests.

Level IIIA is currently the highest level of protection available in a soft body armor product.  Soft body armor is often preferred as it allows for a wider range of motion and weighs considerably less than hard armor plates.  This level of bulletproof vest is able to provide protection from virtually any handgun round.

Higher levels of protection such as III and IV are achieved with hard armor plates and are typically restricted to law enforcement and military units.  Common materials for these armor plates include steel, ceramic, and UHMWPE polyethylene.

Citizen Armor uses the cutting edge technology of Protek Armor.  Protek™ Graphene Armor features the industry leading performance of graphene microfibers which produce lightweight and ballistically superior soft body armor. 

Armor Technology, Blog

How Much Does Graphene Armor Cost?

How Much Does Graphene Armor Cost

Graphene armor costs start at $99 dollars but can go up to over $1,000.  The cost of graphene armor depends on the type of body armor you are wanting.  Graphene microfibers are used to make bulletproof backpacks, inserts, binders, and of course bulletproof vests.

“Layers of carbon one-atom thick can absorb blows that would punch through steel. Recent tests suggest that pure graphene performs twice as well as the fabric currently used in bulletproof vests, making it an ideal armour…”. – According to

Graphene Armor Cost by Product

Graphene microfiber is simply superior to carbon nanotube technology.  This type of armor costs a little more but is higher performance hands down.  In fact the NIJ no longer allows manufacturers to have armor made with carbon nanotubes to be tested.  


Graphene armored vests cost between $645 and $1,126.  The cost of these graphene vests vary depending on how much coverage they offer.  In addition they can be purchased as a standard option or an elite option that is more durable and has a longer warranty.

The least expensive graphene vest is called the T-Shield Vest.  It starts at $645 dollars for the standard armor option. It is concealable and covers your vital organs such as kidneys, liver, heart, and lungs.  

The most expensive graphene vest is the SHTF Vest and it starts at $754 dollars.  It’s wraparound armor design covers more of your body.  It wraps around your sides to cover more threats.  It also offers a MOLLE system so you can strap on any items such as mags, pistols, radios, or other tactical accessories.

Other graphene vests include the Civvy Vest, Civvy Female Vest, which start at $649 for the unisex option and $734 for a vest customized to fit a woman more comfortably.

Bag & Backpack Inserts

The least expensive graphene product is a bulletproof insert.  They start at $99 and are used for armoring many types of bags.  When most people say they want a bulletproof backpack, they are thinking of inserts.  The cost depends on the size and armor level purchased.

  • Small (7×10”) Graphene Inserts start at $99 dollars
  • Medium (10×13”) Graphene Inserts start at $139 dollars
  • Large (11×15”) Graphene Inserts start at $179 dollars

Measuring the bag or backpack will help concerned consumers choose the right size for their bags or backpacks.

Convertible Bulletproof Backpack Vests

A convertible bulletproof backpack vest costs $1,200 for the standard armor configuration.  It is a wraparound body armor solution that is as concealable as it is effective.  It’s rapid deployment system takes you from just carrying a backpack to having front, back, and side body armor in just 2 seconds.  With the elite armor option, $1,524 dollars, it is made with more durable materials and has a longer warranty.  

Binders & Notebooks

Binder and notebook costs start at $249 and go up to $399 dollars.  For school age children and college students the standard armored 3-ring binder notebook costs $249 and has an elite option for $359.  There are executive armored binders made with leather and have a more professional executive appearance, they cost either $299 or $399 depending on if you want a standard or elite armor solution.

What Is Graphene Armor?

Graphene is made up purely of carbon atoms which are configured in hexagonal arrangements.  These layers are structured at a scale of 1 atom thick.  It is famous for its ability to conduct electricity and heat with impressive efficiency.  Due to graphene’s impressive qualities it is being researched for a wide variety of fields.  They include energy storage, electronics, biological engineering, medical treatment, photovoltaic cells, and of course armor technologies.