KMS Piasta Balistica NIJ Level IV CeramicKMS NIJ Level IV Bulletproof Plate KMS NIJ Certified Level IV Ballistic Plate provides the ultimate protection for anyone working in a dangerous profession. Made of ceramic and PE materials,this ballistic plate can stop bullets from most high velocity AR and AK calibers,its proven to reached Level IV NIJ testing parameters. This NIJ rated Level IV Ballistic Plate provides the highest level of protection available. It protects you not only from handgun