Body Armor Basics - How to Choose The Best Plates

Published on March 15, 2025
Duration: 16:53

This video provides a beginner's guide to selecting body armor plates, breaking down the core considerations of cost, weight, and protection. It details different plate materials (steel, ceramic, polymer) and NIJ protection levels (III, IV, III+, Special Threat), explaining their respective strengths and weaknesses. The instructor demonstrates live-fire testing of Level III polymer plates against various calibers, highlighting the importance of backface deformation and the limitations against specific ammunition types like M855 green tips.

Quick Summary

Body armor plates are made from steel, ceramic, or polymer (UHMWPE). Steel is cheap but heavy and spalls. Ceramic is balanced but fragile. Polymer is lightest and buoyant. NIJ Level III stops lead core rifle rounds, Level IV stops armor-piercing rounds. Level III+ and Special Threat offer protection against specific threats like M855 green tips.

Chapters

  1. 00:00Introduction to Body Armor
  2. 00:12The Body Armor Triangle: Cost, Weight, Protection
  3. 00:21Soft vs. Hard Armor
  4. 00:39Plate Materials: Steel, Ceramic, Polymer
  5. 01:54Polymer (UHMWPE) Plates Explained
  6. 02:24Hybrid Armor Plates
  7. 02:46NIJ Protection Levels Explained
  8. 03:07Level III Body Armor
  9. 03:21Level IV Body Armor
  10. 03:38Level III+ and Special Threat Plates
  11. 04:42Single Curve vs. Multi-Curve Plates
  12. 05:14Testing Guard Dog Level III Plastic Plates
  13. 05:52Testing Against Pistol Calibers
  14. 07:59Testing Against 5.56 FMJ
  15. 08:44Testing Against 7.62x39 FMJ
  16. 09:25Testing Against .308 NATO
  17. 10:20Re-testing .308 NATO on a Fresh Plate
  18. 11:31Testing Against M855 Green Tips (Not Rated)
  19. 12:51Testing Against .300 Blackout Subsonic
  20. 13:51Final Thoughts and Disclaimer
  21. 14:37Limitations of Level III Plates vs. Green Tips
  22. 15:04Comparison: Guard Dog vs. Hesco L210
  23. 15:30Personal Preference and Other Factors
  24. 15:38Plate Cuts and Sizes
  25. 16:05Weight Savings vs. Cost Savings
  26. 16:22Conclusion and Where to Buy

Frequently Asked Questions

What are the main types of body armor plates?

Body armor plates are primarily made from steel, ceramic, or polymer (Ultra High Molecular Weight Polyethylene - UHMWPE). Steel is cost-effective but heavy and prone to spalling. Ceramic offers a balance of protection and weight but is fragile. Polymer plates are the lightest and can be buoyant, though often thicker.

What do NIJ Level III and Level IV body armor protect against?

NIJ Level III plates are rated to stop lead core full metal jacket rifle rounds like 5.56 and 7.62x39, and up to five rounds of .308 FMJ. NIJ Level IV is the highest standard, designed to stop a single round of armor-piercing .30-06 and other threats.

What is the difference between Level III+ and Special Threat plates?

Level III+ plates offer enhanced protection over standard Level III, specifically against intermediate steel core rounds like M855 green tips. Special Threat plates are more specialized, focusing on stopping specific threats like armor-piercing intermediate rounds rather than heavier calibers.

Why is backface deformation important when testing body armor?

Backface deformation refers to how much the armor plate indents on the back side when struck. Significant deformation indicates that substantial blunt force trauma would be transferred to the wearer, potentially causing serious injury like broken ribs or internal damage, even if the projectile is stopped.

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