MRC:
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.MDCL
Material Specification:
Mil-p-79, ty fbg, form tm or ty fbm, form tr military specification 1st material response and mil-p-79, tyfbg, form tm or ty fbm form tr military specification 2nd material response or mil-p-79, ty gmg, form tr military specification 3rd material response and mil-p-79, ty gmg, form tr military specification 4th material response
