TIER CALIBER COLOR Downloaded from https://www.everyspec.com I .50 cal Blue MIL-STD-709D I .50 cal Gray & Purple TIER CALIBER COLOR STANDARD INTERPRETATION TYPE COLOR APPLICATION Body Projectile Picture I .50 cal Gray & Purple FED-STD-595/26493 FED-STD-595/37142 Identifies an armor piercing incendiary dim tracer ammunition or indicates an armor piercing incendiary dim tracer capability Armor Piercing Incendia ry Dim Tracer None Gray & Purple Tip I .50 cal Blue FED-STD-595/35109 Identifies short range training ammunition Short Range Tracer Training Blue Light Blue