2161 machinist

The 2161 MOS is for a Machinist in the Marine Corps. Machinists fabricate, repair, and design accessories and modifications for engineering equipment, vehicles, weapons, and other items needed to support the Marine Corps mission.

Their duties include: Selecting the proper stock Setting up work on lathes, shapes, milling machines, and grinders

The 2161 MOS is part of the Ground Ordnance Maintenance occupational field. This field ensures that the Marine Corps has serviceable ordnance materials.