Skill Level 1 Performs ordnance armament DS/GS maintenance. Assists in correcting malfunctions on the mechanisms/systems of tank turrets, armament weapons, and cupolas.

Skill Level 2 Perform duties in preceding skill level, supervises lower grade soldiers, and provides technical guidance to the soldiers in the accomplishment of their duties. Repairs turret mechanisms and tank weapons. Troubleshoots and corrects malfunctions. Provides technical advice and assists in assembling and disassembling the mechanisms and systems of turrets, cupolas, tank weapons, and self-propelled artillery.

Skill Level 3 Performs duties in preceding skill levels, performs small arms/artillery repairer (MOS 45B) duties, and performs fire control repairer (MOS 45G) duties. Inspects and troubleshoots fire control system components, towed artillery fire control systems, self-propelled artillery fire control systems, tank fire control systems, towed artillery armament systems, self-propelled artillery armament systems, fighting vehicle armament systems, tank armament systems, and small arms weapons. Classifies equipment.

Skill Level 4 Perform duties in preceding skill levels. Performs as senior adviser and supervisor of ordnance maintenance and repair crews engaged in DS/GS and depot maintenance on all mechanisms and systems of armament/fire control turrets, artillery, and small arms.