AAA,AN,A4 - Anniston Army
Depot
AA - Augusta Arsenal
AHA - USMC Arsenal
BA - Benecia Arsenal
LE - Letterkenny Ordnance Depot (orange
triangle on pistol grip)
OG - Ogden
Arsenal
MR - Mt.
Rainier Ordnance Depot
RA - Raritan
Arsenal
RR - Red River
Arsenal
RIA - Rock Island
Arsenal
RRA - Red River Arsenal
SAA - San Antonio
Arsenal
SA - Springfield
Armory
Std Prod - Standard Products
TE - Tooele Ordnance Depot
3GM-K - GM WW2