13R Field Artillery Firefinder Radar Operator
Verified ASVAB line score requirement from the official Army specification. Field Artillery: Cannon, rocket and fire-support specialties that deliver indirect fire.
GT ≥ 87
Initial award, Chapter 10c; score requirement verified in official Army PDF.
Verified
Source checked 2026-09-12
What this means
Official Army Chapter 10c PDF lists minimum GT 87; OPAT, training, clearance and other requirements remain separate.
The score listed above is the minimum line score threshold from the official Army MOS specification. Meeting this threshold does not guarantee enlistment — additional requirements such as OPAT physical testing, security clearance, medical screening, and training availability are evaluated separately by your recruiter. To see how GT 87 compares with the rest of the Army, read what counts as a good ASVAB score.
Which ASVAB subtests count toward 13R
13R is judged on one line score. The subtests listed below are the Army's nominal definition of each aptitude area from DA PAM 611-21, Military Occupational Classification and Structure, Table 10-1 (ASVAB aptitude area composites). The score actually printed on your report is computed on the 1997 scale as a weighted sum of seven standard scores (DMDC 2004, Table 2.7) and may give weight to subtests outside the nominal list; GT is the exception and equals AR + VE exactly. Use the line score on your report, or compute it from your standard scores.
VE (verbal: WK and PC) + AR
WK (Word Knowledge), PC (Paragraph Comprehension), AR (Arithmetic Reasoning).
If your score is below GT ≥ 87
Your ASVAB report lists every line score, so start by finding GT and noting the exact gap. A small gap in one composite is usually closed by improving the subtests that feed it, and each subtest counts toward several line scores at once.
Practice on this site: WK (Word Knowledge), PC (Paragraph Comprehension), AR (Arithmetic Reasoning). Start a WK, PC, AR practice set for 13R →
A retest is subject to Army retest rules and timing; ask your recruiter before planning around one. Practice results here are raw scores and never convert into an official line score.
Field Artillery jobs ranked by ASVAB threshold
All 5 currently verified CMF 13 entries on this site, ordered by the lowest score that satisfies each rule. 13R sits at position 5: 0 jobs list a lower threshold and 0 list a higher one. Thresholds in different line scores are not directly comparable.
Other Army jobs judged on GT (General Technical)
Because these MOS share the GT line score with 13R, the same subtests decide your standing for all of them. Jobs at or below 13R's threshold are fallback options; jobs above it are what a higher GT unlocks.
- 91L Construction Equipment Repairer — MM ≥ 87 or (MM ≥ 82 and GT ≥ 85)
- 91S Stryker Systems Maintainer — (MM ≥ 87 and GT ≥ 85) or MM ≥ 92
- 13B Cannon Crewmember — GT ≥ 87
- 13F Joint Fire Support Specialist — GT ≥ 87
- 13J Fire Control Specialist — GT ≥ 87
- 13M MLRS/HIMARS Crewmember — GT ≥ 87
- 14G Air Defense Battle Management System Operator — MM ≥ 91 and GT ≥ 90
- 14H Air Defense Enhanced Early Warning Operator — MM ≥ 91 and GT ≥ 90
- 91A M1 Abrams Tank System Maintainer — MM ≥ 99 or (MM ≥ 88 and GT ≥ 90)
- 91M Bradley Fighting Vehicle System Maintainer — MM ≥ 99 or (MM ≥ 88 and GT ≥ 90)
- 91P Artillery Mechanic — MM ≥ 99 or (MM ≥ 88 and GT ≥ 90)
- 91E Allied Trades Specialist — (GM ≥ 88 and GT ≥ 95) or GM ≥ 98
Next steps
- Check your scores against this and other Army jobs
- Practice WK, PC, AR, the subtests that feed the GT score
- Browse all Field Artillery jobs in CMF 13
- Confirm the current requirement with your recruiter before relying on this information
Frequently asked questions
What ASVAB score do I need for 13R Field Artillery Firefinder Radar Operator?
The verified score threshold recorded for this MOS is GT ≥ 87. Other requirements such as OPAT, clearance, and training are separate.
Which ASVAB subtests count toward the GT score for 13R?
GT (General Technical) is nominally VE (verbal: WK and PC) + AR. The reported score is a weighted sum of seven standard scores on the 1997 scale, so subtests outside that list can also count. Compare the line score printed on your ASVAB report against GT ≥ 87, or compute it from your standard scores with the calculator.
Is AFQT enough to qualify for 13R?
No. AFQT is used for general enlistment qualification. 13R uses specific Army line scores (GT ≥ 87), and the line-score rule shown here is the verified threshold. These are composite scores calculated from ASVAB subtests and are different from your AFQT percentile.
Are there Field Artillery jobs with a lower ASVAB threshold than 13R?
No. 13R has the lowest entry threshold among the 5 currently verified CMF 13 entries on this site; 0 list a higher one.
Where does this 13R score requirement come from?
The verified threshold is recorded from the official Army MOS specification document. Initial award, Chapter 10c; score requirement verified in official Army PDF. Source checked on 2026-09-12.