I have tested personally their level 3, 3+ steel, and the 2 hybrid plates. One being the extreme and the other being regular.
The rifles used were
BCM 16" mid
BCM 14.5 mid
Colt 6920 carbine gas
CMMG 20 inch A4
All NATO chambers and fully chrome lined.
Ammo used
Federal M193 from 2004 and 2016
Federal M855 from 2004
Federal TRU bonded 55 gr
PPU M193
PPU 75 grain match
M80 ball from a 22" M14 clone (level 3 only) stopped at 8 yards
180 gr soft point in 30.06 (level 3 only) cratered the plate, stacked 2nd round on top of 1st and defeated and broke the plate
The level 3 steel stopped 193 from a 16" at 25 yards
The 3 + stopped M193 from a 16" at 8 yards and 855 from a 20 at 8 yards, M193 was stopped at 65 yards (193 defeated the 3+ at all ranges prior to 65 out of the 20)
The 2 hybrids stopped both m855 and m193 at 10 yards from a 20. The extreme stopped 855A1 at 10 yards.
I will say the deformation of the back plate caused me a little concern.
I am using their level 4 ceramics as my duty rig
I am using their level 3+ steel with level 3 plate backers as backup and training plates.