Artillery Systems Technician

If you held MOS 2131, now titled Artillery Systems Technician and formerly the Towed Artillery Systems Technician, you kept the Marine Corps' towed artillery firing. You worked the M777 lightweight 155mm howitzer down to the component level: the recoil mechanism, the hydraulic equilibrators and elevating system, the breech and firing assemblies, the structural cradle and trail legs, and the mechanical side of the digital fire-control system. When a gun came back from a fire mission with a fault, you diagnosed it against the technical manual, tore down the assembly, replaced or repaired the part, and put a weapon back in service that fires a 95-pound projectile with zero tolerance for a missed step. That is precision heavy-mechanical work under field conditions and a clock.

The pipeline runs through the Towed Artillery Repairer Course at the Marine Corps Detachment, Ordnance School. The MOS requires a mechanical maintenance (MM) ASVAB line score of 95 or higher, and it carries no security clearance requirement. The training is hydraulics, recoil theory, structural inspection, torque and alignment standards, and shop maintenance management. By the time you make NCO you are not just turning wrenches. You are running a maintenance program, managing parts and records, and signing off that a weapon system is safe to fire.

Civilian employers in heavy industry value this background because the work maps cleanly. A hydraulic system on an excavator, a press in a manufacturing plant, or a recoil-style damper on heavy equipment follows the same physics you already troubleshoot. Industrial and heavy-equipment maintenance is hiring, and the diagnostic discipline you built on the gun line is exactly what those shops are short on. Explore related Marine maintenance paths like the 2146 Heavy Ordnance Vehicle Repairer and 1341 Engineer Equipment Mechanic, or start from the full military-to-civilian career crosswalk. If you want the language side first, the 50 military terms translated to civilian language guide is a fast win.

When I got out of the Navy it took me 16 months to land work, and the thing that finally turned it was proving what I actually did instead of listing a code nobody could parse. A 2131 has that proof on the gun line: you diagnosed real hydraulic and structural systems, you did not just swap parts. Your job is to write the resume so a maintenance superintendent sees an industrial mechanic, not an artillery MOS they have to look up. — Brad Tachi, Navy Diver veteran & BMR founder

The civilian roles that hire a 2131 background sit in heavy industry, not the armory. Pay figures below are BLS Occupational Employment and Wage Statistics, May 2024.

Industrial machinery mechanics are the closest fit. BLS reports a median wage of $63,510 for industrial machinery mechanics, machinery maintenance workers, and millwrights, with employment projected to grow 13 percent through 2034, much faster than average. Plants run hydraulics, presses, conveyors, and rotating equipment, and they cannot find enough people who can read a schematic and fix the machine instead of waiting on a contractor.

Mobile heavy equipment mechanics repair the hydraulics, undercarriage, and powertrains on excavators, dozers, cranes, and loaders. BLS puts the median for heavy vehicle and mobile equipment service technicians at $62,740, growing 6 percent. The hydraulic diagnostics you ran on a howitzer elevating and equilibrator system carry over almost directly.

Hydraulic systems technicians and millwrights install, align, and maintain industrial machinery in factories, refineries, and power plants. Millwright work pays inside that $63,510 group and is heavy on precision alignment and structural assembly, the same torque-and-tolerance discipline the gun line demanded.

The market is geographic. Manufacturing and heavy-equipment work clusters in the Midwest, the Gulf Coast, and industrial corridors of the Southeast and Texas; mining and energy regions pay a premium for mobile-equipment techs. This is cyclical work tied to construction and industrial output, so be honest with yourself about the local market before you commit to one trade. Marines from related fields land in the same shops, so look at how the Army handles it on the 91H Track Vehicle Repairer and 91L Construction Equipment Repairer pages, and how the Navy translates it on the MR Machinery Repairman page. For the trades path specifically, the military to trade careers guide breaks down apprenticeships and licensing. Translate your gun-line history into civilian bullets with the military resume builder, or build your resume now.

Federal hands-on maintenance work runs mostly on the Wage Grade (WG) trades schedule, not the GS scale, and that is good news for a 2131. WG jobs pay by locality and trade skill, and depot, arsenal, shipyard, and base maintenance shops hire heavily for the exact systems you already know.

WG-5803 Heavy Mobile Equipment Mechanic is the direct line. These positions repair hydraulics, drivetrains, and structural assemblies on heavy equipment across DoD depots, Army arsenals, and federal motor pools. WG-5350 Production Machinery Mechanic and WG-5352 Industrial Equipment Mechanic cover the plant-machinery side at depots and ammunition plants. WG-3414 Machining fits if you want the fabrication and precision-parts side of the house.

On the GS side, two series reward the technician who moves toward planning and inspection. GS-0802 Engineering Technician supports engineers on equipment design, testing, and maintenance engineering, a natural step up from the bench. GS-1910 Quality Assurance handles inspection and acceptance of repaired or manufactured items, where your eye for torque, tolerance, and a safe-to-fire signature is the whole job.

Veterans' Preference adds 5 or 10 points to your federal application score and can move you up a referral list, and disabled-veteran preference can qualify you for special hiring authorities. Learn how the points actually work in the veterans preference points guide, and match your experience to a series with how to find your military job series equivalent. The federal resume is its own format, longer and more detailed than a civilian one. The 2026 OPM federal resume format walks the structure, and the federal resume builder handles the layout for you. Air Force hydraulic and Army track-vehicle maintainers chase the same WG and GS series, so compare the Air Force 2A6X5 Aircraft Hydraulic Systems page.

If you are staying in heavy-equipment or industrial maintenance, your terminology already matches the shop. A maintenance superintendent at a CAT dealership knows what hydraulics and recoil dampers are. This section is for the 2131 who is targeting a role OUTSIDE artillery and ordnance repair, where "towed artillery" on a resume reads as a code nobody can score.

The fix is to translate the system, not the weapon. Lead with the engineering verbs that civilian maintenance managers screen for: diagnosed, calibrated, aligned, overhauled, certified. Here is how the gun-line work converts.

Military term	Civilian term
Howitzer recoil and equilibrator system	High-pressure hydraulic and damping system
Technical manual (TM) fault isolation	Schematic-based diagnostic troubleshooting
Breech and firing mechanism overhaul	Precision mechanical assembly and rebuild
Safe-to-fire inspection and sign-off	Quality inspection and equipment certification
Shop maintenance management program	Preventive maintenance and work-order management

Before and after, for a role outside the field:

Before: "Performed organizational maintenance on M777 towed howitzers and maintained TM-directed PM schedule."

After: "Diagnosed and overhauled high-pressure hydraulic and recoil-damping systems using schematic-based fault isolation, then certified each unit safe for operation under a zero-defect inspection standard."

That second version gets read by a hiring manager who has never heard of a 2131. For the full method, see converting your evaluations into resume bullets and the military resume keywords by industry breakdown. The military resume builder applies these translations automatically.