Watch MM, EL first.
Marine Corps MOS guide
2171 Electro-Optical Ordnance Repairer ASVAB score requirements
Score target and study focus for Marine Corps 2171.
2171
Marine Corps MOS score brief
Electro-Optical Ordnance Repairer
ASVAB line score targetMM 105+ and EL 115+
Supports tactical vehicles, ground ordnance, ammunition, EOD, transport, or armored vehicle maintenance. This MOS is in the Ground Ordnance Maintenance field; use the guide to connect its score target with the right ASVAB subjects.
Electro-Optical Ordnance Repairer can fit students who want a Marine Corps role in ground ordnance maintenance and are ready to verify current contract options with a recruiter.
Technical, operations, logistics, security, aviation, public-service, or administrative paths depending on the MOS field.
Study first
Focus these areas
Arithmetic ReasoningMechanical ComprehensionAuto InformationShop InformationElectronics InformationMath KnowledgeGeneral Science
- Build arithmetic reasoning, mechanical comprehension, auto information, shop information before comparing this MOS against your score report.
- Keep AFQT inputs stable while you raise the Marine Corps line-score areas tied to this role.
Daily work
What you may do
- Work on electro-optical ordnance repairer duties in the Marine Corps ground ordnance maintenance field.
- Follow unit procedures, equipment standards, reporting routines, and mission-readiness checks tied to the MOS.
2171 Marine Corps MOS FAQ
Common Electro-Optical Ordnance Repairer ASVAB questions
What ASVAB score do you need for Marine Corps 2171 Electro-Optical Ordnance Repairer?
MM 105+ and EL 115+ is the planning target shown on this MeritMarch guide. Treat it as study guidance, not a contract promise, because Marine Corps MOS access, openings, waivers, medical qualification, and recruiter guidance can change.
What does a Marine Corps 2171 Electro-Optical Ordnance Repairer do?
Supports tactical vehicles, ground ordnance, ammunition, EOD, transport, or armored vehicle maintenance. This MOS is in the Ground Ordnance Maintenance field; use the guide to connect its score target with the right ASVAB subjects.
Which ASVAB sections should I study for 2171?
Start with the subjects behind MM 105+ and EL 115+: Arithmetic Reasoning, Mechanical Comprehension, Auto Information, Shop Information, Electronics Information, Math Knowledge, General Science. If your AFQT is not stable yet, keep Arithmetic Reasoning, Math Knowledge, Word Knowledge, and Paragraph Comprehension in the plan too.
Is 2171 guaranteed if I meet the score target?
No. ASVAB line scores are only part of Marine Corps MOS access. Current openings, contract options, medical standards, citizenship, security screening, waivers, and Marine Corps needs can all affect availability.
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Sources and official confirmation
Line-score target shown on this page: MM 105+ and EL 115+. Current Marine Corps MOS access still depends on official policy, openings, medical qualification, background screening, waivers, citizenship, and recruiter guidance.
Sources reviewed May 9, 2026: Marines MOS fields, Marine Corps FY26 MOS Manual NAVMC 1200.1L, Marines general requirements, Operation Military Kids Marine Corps MOS ASVAB table.