The Guard Dog Body Armor OPMOD plates are warrantied by Guard Dog Body Armor for up to 7 years from their pack date on the back of the plate.
The plate thickness is 1 inch.
Yes, they are made of small composite ceramic blocks
No, they are single curved plates
Because it was not tested by a NIJ sanction testing facility that are only allowed to issue a NIJ certificate.
Yes, it is one plate if that’s what standalone means
From nij.gov:
"Level IV armor has been tested to stop .30cal steel core armor piercing rifle ammunition. Ammunition 5.56mm/.223 Jacketed Hollow Point (JHP) has a lead core. Level III armor or greater is the best choice for protection among the armors on the CPL. Ammunition 5.56mm/.223 Green Tip Full Metal Jacket (FMJ) ammunition has a part steel core. Level IV armor is the best choice for protection among the armors on the CPL."
Within the guard dog family of plates, the opmod had a spaul coating where the other plates just have nylon fabric.