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Marine Corps MOS guide
5711 Chemical, Biological, Radiological, and Nuclear (CBRN) Defense Specialist ASVAB score requirements
Score target and study focus for Marine Corps 5711.
5711
In demandMarine Corps MOS score brief
Chemical, Biological, Radiological, and Nuclear (CBRN) Defense Specialist
ASVAB line score targetGT 110+
Supports construction, utilities, engineer equipment, combat engineering, fuels, water, or CBRN defense. This MOS is in the CBRN Defense field; use the guide to connect its score target with the right ASVAB subjects.
Chemical, Biological, Radiological, and Nuclear (CBRN) Defense Specialist can fit students who want a Marine Corps role in cbrn defense 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
- Build word knowledge, paragraph comprehension, arithmetic reasoning, mechanical comprehension 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 chemical, biological, radiological, and nuclear (cbrn) defense specialist duties in the Marine Corps cbrn defense field.
- Follow unit procedures, equipment standards, reporting routines, and mission-readiness checks tied to the MOS.
5711 Marine Corps MOS FAQ
Common Chemical, Biological, Radiological, and Nuclear (CBRN) Defense Specialist ASVAB questions
What ASVAB score do you need for Marine Corps 5711 Chemical, Biological, Radiological, and Nuclear (CBRN) Defense Specialist?
GT 110+ 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 5711 Chemical, Biological, Radiological, and Nuclear (CBRN) Defense Specialist do?
Supports construction, utilities, engineer equipment, combat engineering, fuels, water, or CBRN defense. This MOS is in the CBRN Defense field; use the guide to connect its score target with the right ASVAB subjects.
Which ASVAB sections should I study for 5711?
Start with the subjects behind GT 110+: Word Knowledge, Paragraph Comprehension, Arithmetic Reasoning, Mechanical Comprehension. If your AFQT is not stable yet, keep Arithmetic Reasoning, Math Knowledge, Word Knowledge, and Paragraph Comprehension in the plan too.
Is 5711 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: GT 110+. 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.