Marine Corps (USMC) Enlisted Job Descriptions

OCCUPATIONAL FIELD 21, ORDNANCE

The ordnance OccFld assures the MARFOR that serviceable ordnance materials are available. Duties include the inspection, repair, and maintenance of most weapon systems possessed by Marine Corps units.

Qualifications required include basic ordnance administration and knowledge; the capability to technically inspect/ analyze an ordnance item and repair/fabricate the same; and to understand and implement repair shop/armory operational procedures.

The requirement also exists to impart technical knowledge to organizational personnel, crews, and supervisors for proper preventive maintenance, inspections, and application.

Ordnance personnel will be required to learn ordnance administrative procedures, repair analysis, technical inspection procedures, repair procedures, testing of ordnance equipment, and quality control methodology.

Types of entry/level jobs available include armorer, artillery repairer, assault amphibious vehicle/tank/optical/laser/small missile repairer/machinist. Marines entering this OccFld will receive MOS 2100, Basic Ordnance Marine.

 

Primary MOS's
MOS	Job Title	Authorized Ranks
2111	Small Arms Repairer/Technician	GySgt to Pvt
2131	Towed Artillery Systems Technician	GySgt to Pvt
2141	Assault Amphibious Vehicle (AAV) Repairer/Technician	GySgt to Pvt
2146	Main Battle Tank (MBT) Repairer/Technician	GySgt to Pvt
2147	Light Armored Vehicle (LAV) Repairer/Technician	GySgt to Pvt
2149	Ordnance Vehicle Maintenance Chief	MGySgt and MSgt
2161	Machinist	GySgt to Pvt
2171	Electro-Optical Ordnance Repairer	GySgt to Pvt
2181	Senior Ground Ordnance Weapons Chief	MGySgt and MSgt
Secondary MOS's (See Note Below)
2112	Precision Weapons Repairer	GySgt to Cpl
Note: A secondary MOS is a "job within a job." It denotes a special skill or training that the Marine holds in addition to the general requirements of his/her Primary MOS.