Tencate 6400/AT STOP-BZ vs. Velocity Systems PBZ

[runngun]

I am considering purchasing a set of lightweight stand-alone plates, and am trying to determine if the AT STOP-BZ is in any way inferior to the Velocity Systems PBZ in actual performance, or if velocity Systems merely conducted additional testing not conducted by Tencate or AT.

1. How is the Velocity Systems PBZ physically different form the Tencate 6400/AT STOP-BZ plate?
2. Is there any documented instance (lab test or YouTube) where a Tencate 6400/AT STOP-BZ was shot with M80? Results?
3. Is there any documented instance of any plate stopping M855A1 but failing to stop M80?
4. Velocity Systems PBZ is multi hit M80 rated, why is it not NIJ Level III?

 

[Longeye]

Q.4 Because except for Fed grant purposes, NIJ ceased to be a useful metric for rating plates. The L4 rating is pretty pointless in the US, and we face threats US that L3 does not address. This explains the rise of the broadly defined Special Threat rating. Companies are testing against the common threats like M193, M855, SS109, and 7.62x39 API. Those are not functionally addressed by NIJ L3 testing. Third party testing tells us what we need to know about the plates and their suitability relative to current common threats.

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