MRC:
An indication of the weapon/s/ for which the item is designed.AHVQ
Weapon For Which Designed:
Gun m1a2 and gun m1a3 and gun m2a1 and gun m2a2 and gun m2a3 and gun m36, m41, m54
MRC:
A feature of the item of supply which must be specifically recorded when the reference number covers a range of items.ZZZY
Reference Number Differentiating Characteristics:
As differentiated by cartridge case material, fuze type, fuze model number, fuze delay time, projectile filler type, propelling charge feature type, propellant characteristic markings, weapon for which designed, unit package quantity, unit package type, package model number
