This video from Polenar Tactical investigates the effect of applying oil to an NIJ Level 3A ballistic vest. Testing with various 9mm rounds reveals that oil significantly reduces the vest's ability to stop projectiles, allowing for deeper penetration. The experiment demonstrates that lubricating the vest's fibers diminishes friction, making them more susceptible to being pushed apart by incoming rounds.
This video provides an expert-level assessment of an AliExpress ballistic helmet, highlighting critical flaws in its performance despite claims of NIJ Level IIIA certification. The instructor, Ziga, demonstrates significant backface deformation across various calibers, indicating a high risk of traumatic brain injury even when projectiles are stopped. The review emphasizes the importance of understanding deformation limits beyond just penetration resistance.
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