mos.directory

Coast Guard Rating · Combat & Infantry

GM Gunner's Mate

Current service use not established

This code is listed in the directory. Inclusion alone does not confirm current service use.

Browse Coast Guard

Overview

A gunner's mate manages ordnance and operates, maintains, and repairs firearms, weapon systems, gun mounts, and related handling equipment. This specialist accounts for ammunition and pyrotechnics, maintains mechanical, electrical, and hydraulic ordnance equipment, and trains personnel to handle and use Coast Guard weapons properly.

Core Skills

  • Custody of vessel and shore-unit weapons
  • Instruction in proper weapons handling
  • Small arms and deck gun maintenance

Civilian Career Paths

Career associations are editorial assessments of the cited evidence, not an official crosswalk unless the evidence explicitly says so. O*NET supplies civilian occupation information, not proof of a military match. Related experience does not confer civilian qualifications. Tasks and tools below describe civilian work, not military training.

Security Guards

Experience using and maintaining firearms, keeping custody of weapons, and teaching proper handling provides a weapons-handling foundation for armed security work.

How to prepare: Check the licensing and armed-guard training requirements with the regulator in your intended state of employment before choosing a course. Most states require guard licensing, generally including a minimum age of 18, a background check, and training; armed guards usually need authorization to carry weapons and face stricter entry requirements.

What the civilian work involves
  • Patrol industrial or commercial premises to prevent and detect signs of intrusion and ensure security of doors, windows, and gates.
  • Circulate among visitors, patrons, or employees to preserve order and protect property.

Notes & Sources

Evidence for this guidance (3 documents)
  1. USCG authority snapshot: GM Gunner's Mate

    [1] data/authority/coast_guard-codes.json entry GM (COOL USCG MOC Feed (uscg.json) + Go Coast Guard - Enlisted Careers (gocoastguard.com)); fetched 2026-07-25

    Supports: Custody of vessel and shore-unit weapons, Instruction in proper weapons handling, Small arms and deck gun maintenance, Security Guards (O*NET 33-9032.00)

  2. O*NET: Security Guards

    [2] O*NET 30.3 occupational data

    Supports: Security Guards (O*NET 33-9032.00)

  3. Bureau of Labor Statistics: Security Guards and Gambling Surveillance Officers

    [3] How to Become One; Licenses, Certifications, and Registrations; page dated 2026-08-27, retrieved 2026-09-23

    Supports: Security Guards (O*NET 33-9032.00)

Defense contractor jobs for GM

Descriptions may be summarized for clarity. Verify all information with your branch career counselor or official military documentation before making career decisions.

Report an error on this page