HighCom Armor Guardian 4s16 The Guardian 4s16™ Level IV Stand Alone ceramic plate provides rifle armor protection from armor-piercing rounds. Made in the USA, the 4s16 has been independently tested by an NVLAP accredited laboratory according to NIJ Standard 0101.06 level IV ballistic threats. Product Specifications: Protection: Level IV Stand Alone Armor Piercing NIJ Standard 0101.06: This product has been independently tested by an NIJ approved laboratory according to the NIJ standard of protection RST: Rifle Special Threats Validated Material: Ceramic + UHMWPE Exterior Cover: 1000D Cordura®, Textured Nylon Thinness: 0.75” Cut: Available in Shooters, Swimmers, SAPI, and Full (10” x 12” shooters cut is considered nominal 9.5” x 11.5” dimensions) Warranty: 5 years on all ballistic material excluding exterior cover and 1 year on exterior cover material and workmanship