mos.directory

Marine Corps MOS · Engineering

2171 Electro-Optical Ordnance Repairer

Current service use not established

This code is listed in the directory. Inclusion alone does not confirm current service use.

Browse Marine Corps

Overview

Electro-Optical Ordnance Repairers maintain and repair ground ordnance lasers, night vision devices, small missile systems, and other fire control equipment. They inspect, troubleshoot, adjust, and perform mechanical, optical, and electrical repairs, while senior personnel train staff and manage repair shops or facilities.

Minimum clearance: Secret

Minimum ASVAB: MM 105 and EL 110

ASVAB policy: Not policy-reviewed · coverage unknown · as of 2026-10-19

Program scope has not been reviewed.

Policy applicability and coverage of the program's score routes have not been reviewed. Shown-route arithmetic is not an eligibility decision.

Source: navmc-1200-1l-fy26 (source date 2025-03). Policy applicability has not been established.

See if you would hit this score: free ASVAB practice test

Core Skills

  • Laser and night vision device maintenance
  • Fire control instrument troubleshooting and adjustment
  • Combined mechanical, optical, and electrical repairs

Civilian Career Paths

Career associations are editorial assessments of the cited evidence, not an official crosswalk unless the evidence explicitly says so. O*NET supplies civilian occupation information, not proof of a military match. Related experience does not confer civilian qualifications. Tasks and tools below describe civilian work, not military training.

Electrical and Electronics Repairers, Commercial and Industrial Equipment

Troubleshooting and repairing electrical and electro-optical fire control equipment transfers directly to diagnosing electronic equipment faults and documenting repairs.

How to prepare: Complete a hands-on industrial electronics troubleshooting course focused on equipment used by your target employers.

What the civilian work involves
  • Test faulty equipment to diagnose malfunctions, using test equipment or software, and applying knowledge of the functional operation of electronic units and systems.
  • Maintain equipment logs that record performance problems, repairs, calibrations, or tests.
  • Inspect components of industrial equipment for accurate assembly and installation or for defects, such as loose connections or frayed wires.
Civilian tools and software (examples)
  • Circuit evaluation software
  • Computerized maintenance management system CMMS

Medical Equipment Repairers

Mechanical and electrical instrument repairs, troubleshooting, and maintenance records provide a foundation for servicing medical equipment.

How to prepare: Take an introductory biomedical equipment maintenance course with supervised practice using manufacturers' troubleshooting and service procedures.

What the civilian work involves
  • Test or calibrate components or equipment, following manufacturers' manuals and troubleshooting techniques, using hand tools, power tools, or measuring devices.
  • Inspect, test, or troubleshoot malfunctioning medical or related equipment, following manufacturers' specifications and using test and analysis instruments.
  • Keep records of maintenance, repair, and required updates of equipment.
Civilian tools and software (examples)
  • Inventory control system software

Training & Development

Choose credentials for your target role. COOL funding markers describe program listings, not a guarantee of eligibility or funding.

Getting Started

  • Associate Electronics Technician (CETa)

    Demonstrate foundational knowledge of electronic circuits, electrical theory, test equipment, and work procedures relevant to equipment repair.

    Eligibility and preparation: Designed for technicians with less than two years of electronics experience or training; requires passing the CETa examination.

    For: Electrical and Electronics Repairers, Commercial and Industrial Equipment, Medical Equipment Repairers

Notes & Sources

Evidence for this guidance (4 documents)
  1. NAVMC 1200.1L (FY26, in force): MOS 2171

    [1] MOS 2171 section "a. Summary"; cached text line 35401; NAVMC 1200.1L signed 2025-03-07, in force until 2026-10-01

    Supports: Laser and night vision device maintenance, Fire control instrument troubleshooting and adjustment, Combined mechanical, optical, and electrical repairs, Electrical and Electronics Repairers, Commercial and Industrial Equipment (O*NET 49-2094.00), Medical Equipment Repairers (O*NET 49-9062.00)

  2. O*NET: Electrical and Electronics Repairers, Commercial and Industrial Equipment

    [2] O*NET 30.3 occupational data

    Supports: Electrical and Electronics Repairers, Commercial and Industrial Equipment (O*NET 49-2094.00)

  3. O*NET: Medical Equipment Repairers

    [3] O*NET 30.3 occupational data

    Supports: Medical Equipment Repairers (O*NET 49-9062.00)

  4. COOL credential mapping: Associate Electronics Technician (CETa)

    [4] 2171 cached COOL credential feed

    Supports: Associate Electronics Technician (CETa)

    [5]ETA International: Associate Certified Electronics Technician · CETa description and CETa Exam Info; retrieved 2026-09-23

    Supports: Associate Electronics Technician (CETa)

Defense contractor jobs for 2171

Descriptions may be summarized for clarity. Verify all information with your branch career counselor or official military documentation before making career decisions.

Report an error on this page