Building BulletProof —

What specs matter?

Material thickness is only one factor when it comes to ballistic protection. Standards such as UL 752 and MIL-DTL-46100 exist to make sure that armor systems can consistently withstand real-world threats. Demonstrated testing and compliance with these standards is commonly required for municipal, state, federal, and military contract work.

  • Evaluates ballistic penetration resistance against specific firearm calibers and projectile types.

  • Evaluates hardness consistency, ballistic performance, toughness, and fracture resistance in armored steel.

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UL 752 - 12th Edition

11th Edition vs. 12th Edition

Until 2023, UL 752 used a hierarchical testing model, meaning lower-level threats were often assumed to be stopped if a material passed a higher-level rating. The 12th Edition removed that assumption after real-world testing showed otherwise.

What Changed in UL 752 12th Edition?

  • Direct testing for modern rifle threats such as M855 and 7.62×39

  • Higher shot counts and expanded shot patterns

  • Edge-impact testing requirements

  • Multi-sample validation procedures

Why it Matters

While the UL standard changed, the ballistic products on the market have not. Other armor systems continue to spec the 11th Edition rather than retest their products under the rigorous 12th Edition. For contractors and facility owners, specifying outdated standards means trusting inferred protection instead of verified performance against modern ballistic threats.

Armorbloks was developed around UL 752 12th Edition standards from the start. We believe ballistic protection should be defined by verified testing — not assumptions.

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Specs for Military Applications

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Black and white photo of the United States Capitol building exterior, featuring a large dome and columns, with American flags flying nearby.

As the world’s largest defense purchaser, the U.S. Department of Defense plays a major role in shaping the standards used across the ballistic protection industry. MIL-DTL-46100 was created to hold hardened steels to a level of quality that ensures:

  • Consistent hardness performance verified lot-by-lot

  • Compliance with MIL-STD-662F V50 ballistic testing procedures

  • Controlled chemistry and heat treatment requirements for material consistency

A ballistic armoring solution is only as reliable as the materials its made from. That’s why MIL-DTL-46100 exists as a benchmark for the hardened steel used in military applications, including platforms such as the M1 Abrams and MRAP. Armorbloks is crafted using this same armor-rated steel.

This level of material performance makes Armorbloks perfect for government, military, and high-security applications.

See Specific Applications

Have a specific project in mind?

Every project is different. That’s why we offer in-house customization to fit your exact requirements, including:

  • Custom panel shapes

  • Precision dimension adjustments

  • Additional mounting holes

Send us your project parameters and we’ll provide a personalized solution and estimate.