The Marine Corps is merging MOS 1316 (Metal Worker) and MOS 2161 (Machinist) into a single new MOS: 1321, Fabrication Specialist. The recode happens automatically on 1 October 2026. The goal is a multifunctional advanced manufacturing Marine. If you're currently holding either MOS, this directly affects your record, your training pipeline, and potentially your promotion timeline.
★ Affects all reservists: Every Marine currently coded 1316 or 2161 will be recoded to 1321 on 1 Oct 2026, with training requirements and promotion impacts that vary by rank.
Who it affects
All active and reserve component Marines currently holding PMOS 1316 or 2161, across all ranks. This MARADMIN applies to the total force.
A small number of specific E8s and E9s are also named for lateral move approval (see paragraph 4.a.1 of the source message).
What you need to do
Your recode is handled administratively by M&RA (MMIB) via unit diary entries. You do not submit paperwork to change your MOS. However, depending on your rank and training history, you may have a formal school requirement:
If you are Pvt through SSgt on a second enlistment:
You will receive a draw case code if you have not completed both courses:
- Fabricator A, Metal Worker:
A141326 - Fabricator B, Machinist:
A142156
That code flags you for required training. It comes off your record when you finish both courses.
- Prior 2161 Machinists must complete Fabricator A (Welding).
- Prior 1316 Metal Workers must complete Fabricator B (Machinist).
- Exception: 1316 Marines who already completed the Machinist Technician course (
A14GMM) do not need Fabricator B.
Training is conducted at Fort Lee.
If you are GySgt or above: No additional MOS training required from TECOM.
For fitness reports and JEPES: No fitrep or JEPES entry is required just because your MOS changed. The new JEPES MOS qualifications for 1321 take effect 15 June (year not specified in the MARADMIN; confirm with your S-1).
Nothing else to self-initiate. Watch for the draw case code on your record after 1 Oct 2026 and coordinate with your monitor and command to schedule training if flagged.
Key dates
| Date | What happens |
|---|---|
| 1 Oct 2026 | All 1316 and 2161 Marines recoded to 1321 |
| 15 June (year unspecified) | New JEPES MOS qualifications for 1321 take effect |
| 1 Oct 2030 | Deadline for Pvt-SSgt (second enlistment) to complete cross-training |
| FY27 | No E8/E9 promotions in MOS 1321; GySgt 2161s will not be considered for 2181 MSgt board |
| FY28 | E8/E9 promotions in 1321 resume per published board schedules |
The official version
MARADMIN 235/26 is the source document.
Referenced orders: NAVMC 1200.1K (MOS Manual), MCO 1610.7B (PES), MCO 1616.1 (JEPES), MCO P3500.72A (T&R Program).
POC for questions: MGySgt C.M. Gutierrez Jr, I&L. Email: clemente.gutierrez@usmc.mil
This is written by a reservist, for reservists. It is not an official publication of HQMC or MARFORRES. Always verify guidance with your command or unit S-1 before acting on any article or summary.