TEXT: The Morrow Project 4th Edition 
  The Morrow Project 4th Edition Rule book is required for a full understanding of how this table is to be used. 
  Ballistic Armor Ratings v1.1 
  Aluminum Armor Plate 22mm (0.875") NIJ IIIA 
  Aluminum Armor Plate 25mm (1.00") NIJ III 
  Aluminum Armor Plate 35mm (1.375") NIJ IV 
  Steel Armor Plate 3.0mm (0.119") NIJ IIIA 
  Steel Armor Plate 6.3mm (0.250") NIJ III 
  Steel Armor Plate 12.7mm (0.500") NIJ IV 
  Ballistic Grade Fiberglass 3.2mm (0.125") NIJ I 
  Ballistic Grade Fiberglass 6.3mm (0.250") NIJ IIA 
  Ballistic Grade Fiberglass 7.9mm (0.312") NIJ II 
  Ballistic Grade Fiberglass 11.1mm (0.437") NIJ IIIA 
  Ballistic Grade Fiberglass 30.1mm (1.187") NIJ III 
  Boron Carbide Armor Plate 15mm (0.59") NIJ III 
  Boron Carbide Armor Plate 20mm (0.79") NIJ IV 
  Ballistic Resistant Rigid Polyethylene PCR 4.8mm (0.187") NIJ I 
  Ballistic Resistant Rigid Polyethylene PCR 5.6mm (0.212") NIJ IIA 
  Ballistic Resistant Rigid Polyethylene PCR 5.9mm (0.234") NIJ II 
  Ballistic Resistant Rigid Polyethylene PCR 7.1mm (0.281") NIJ IIIA 
  Ballistic Resistant Rigid Polyethylene PCR 19mm (0.750") NIJ III 
  Ballistic Resistant Woven Rigid Aramid (Kevlar) 4.5mm (0.180") NIJ IIA 
  Ballistic Resistant Woven Rigid Aramid (Kevlar) 4.8mm (0.190") NIJ II 
  Ballistic Resistant Woven Rigid Aramid (Kevlar) 5.4mm (0.212") NIJ IIIA 
  Transparent Armor (Bullet Resistant Glass) 14.5mm (0.51”) NIJ II 
  Transparent Armor (Bullet Resistant Glass) 18mm (0.75”) NIJ IIIA 
  Transparent Armor (Bullet Resistant Glass) 42mm (1.65”) NIJ III 
  Transparent Armor (Bullet Resistant Glass) 68mm (2.68”) NIJ IV 
  Bullet Resistant Clear Plastic (Lexan, Makrolon, Hygard or GE Lexan) 19mm (0.76”) NIJ I 
  Bullet Resistant Clear Plastic (Lexan, Makrolon, Hygard or GE Lexan) 25mm (1.00”) NIJ II 
  Bullet Resistant Clear Plastic (Lexan, Makrolon, Hygard or GE Lexan) 32mm (1.25”) NIJ IIIA 
  Kevlar 29 (9 Layers) NIJ I 
  Kevlar 29 (13 layers) NIJ IIA 
  Kevlar 29 (16 layers) NIJ IIA 
  Kevlar 29 (21 Layers) NIJ II 
  Kevlar 29 (24 Layers) NIJ II 
  Kevlar 29 (26 Layers) NIJ III 
  Kevlar 129 (13 Layers) NIJ IIA 
  Kevlar 129 (16 Layers) NIJ IIA 
  Kevlar 129 (32 Layers) NIJ IIIA 
  Kevlar 129 (34 Layers) NIJ IIIA 
  Kevlar 129 (40 Layers) NIJ III 
   
   
  
  Kevlar KM2 (22 Layers) NIJ IIIA 
  Kevlar KM2 (32 Layers) NIJ IIIA 
  Kevlar XP (6 Layers) NIJ IIA 
  Kevlar XP (9 Layers) NIJ II 
  Kevlar XP (11 layers) NIJ IIIA 
   
  
SOURCE: textdata/thevault/The Morrow Project/Unofficial/The Supply Bunker/4e Additions/Ballistic Armor Rating v1.1.pdf