Quoted:

Just checked out their site; I stand corrected.

That's some retarded crap alright. As if armor classifications don't already confuse people:
Anything with an 'a' has always been handgun/shotgun/low velocity only,  eg. iia, iiia.

Rifle rated plates were either Class iii or iv, with iii+ not being an official designation, but intended by manufacturers to indicate something slightly higher than iii (where iii might not stop both M193 and M855, and iii+ supposedly will).

Calling something iiia+ is asinine, as following the general nomenclature, this would describe something slightly higher than iiia (i.e. iiia+ might perhaps stop the higher PCC velocities that iiia wouldn't stop).

RMA claims that this iiia+ will stop multiple hits from M193 and 7.62x39 though.

There are a great deal of things that YouTube shoots alone can't reveal, not to mention the problems associated with Chinese manufacturing.

Sioux Manufacturing was contracted by the DoD to weave Kevlar for the PASGT helmet. It was discovered they were shorting the picks in the weave to save a buck. This shorting lead to a measurable decrease in ballistic integrity.

ArmorSource sub-contracted their PASGT assembly to UNICOR. Their manufacturing supervisors were having prisoners cut and assemble material and helmets with hand made tools, dissembling old helmets and reusing the material, and other things like that.

Those things happened in the US with US based companies, those companies being contracted by the US Government. What do you think can happen in China?

Furthermore there are other issues to consider besides just whether or not the plate simply stops the projectile from penetrating. This is what I posted last time in regards to the Botach plates:

Quoted:
I can't say a whole lot about the plate specifically without knowing more about them. I'll say that they appear to use a monolithic silicon carbide strike face, typical of Chinese made armor.

Where they're going to be cutting corners to get price down is likely in both materials and construction. Ceramic purity is probably lower than what you'd get with a US manufacturer, the polyethylene will be weaker and not as effective as a top end brand like Dyneema, the adhesives used may be more subject to degradation over time, etc.

A lot of what you're paying for though with an established US manufacturer is quality control and consistency, not to mention little things like actually having ballistic lab reports available. Botach doesn't even state measured BFS, all they state about the plate is a garbled description of multi hit capability. Nothing about BFS readings, impact velocity, shot spacing, etc.

Do the plates work? Sure. Do they work the way you see in GunsNGears video consistently? Don't know. Do they meet NIJ BFS standards? Don't know. If they do, for how many hits after the first can it meet the BFS standard? Don't know. Is energy transfer at an acceptable level? Don't know.

The problem with the last point about energy transfer is that this is something even NIJ standards don't cover. It's not just total depth of deformation, the BFS reading, that matters. It's the rate at which that deformation occurs. I can take my fist and slowly push my gut in a couple inches without any pain or damage. Now if I tried deforming my gut to the same depth in a few milliseconds I'd be hurting. This brings me back to the point about inferior Chinese polyethylene, the backing you're depending on to catch the bullet remnants, dissipate the remainder of the energy, and do so with minimal BFD. Ensuring efficient handling of kinetic energy during an impact with a rifle projectile is critical.

With a US manufacturer using something like Spectra or Dyneema you have a known quantity, certain quality controls in place to ensure material consistency, and a known level of energy absorption/dissipation capability. You have none of that with these mystery meat Chinese plates. Ballistic Spectra and Dyneema have been engineered to maximize energy absorption and rapid energy transfer throughout the material, not to mention optimizing tensile strength.

I'll stop there because this is turning into a book but my point is there's a reason US made plates cost more. Bottom line - the plates appear to stop what they say they stop. The problem is we don't know any more than that and there's more to armor than just a brand new plate stopping the projectile from penetrating.