This job is responsible for repairing and maintaining all types of firearms. This includes pistols, rifles, machine guns, and other weapons that the military may use. While its primary responsibility is to repair these weapons, it also needs to maintain them in order to ensure that they are ready for use whenever necessary. Let’s check this article to find out more information about MOS 91F.
MOS 91F is a part of Us Army Enlisted MOS List.
Table of Contents
Small Arms/Artillery Repairer Requirements: Qualifications and skills

There are qualifications and some preferred skilled associated with MOS 91F:
Qualifications

You will need at least a 93 in General Maintenance (GM) on the Armed Services Vocational Aptitude Battery (ASVAB), which you can take when you turn 17. You will also need to score high on your Armed Services Vocational Aptitude Battery test in categories such as attention to detail, accuracy, or interest in working with weapons.
You must be between 17 and 26 years of age. A US citizen and be expected to pass a drug test and background check. Once you enlist, you will be sent to basic training for eight weeks. After you complete your Basic Training, if you choose to continue in the Army, then you will continue on with your training for Small Arms/Artillery Repairer (MOS 91F), which is usually 10 weeks.
This job requires you to be detail-oriented and possess an eye for perfection. Since you will be working with weapons, simply forgetting to screw in one piece could result in serious injuries or even death, so you must pay close attention when working with these firearms. You also need to be accurate since any mistakes could cause hazardous effects and endanger you and your fellow soldiers.
Interest in electrical equipment
This job will require the skills and abilities to understand and acquire knowledge of equipment, tools, and test equipment. You will be expected to know which way to operate these gear and test equipment. You will also need good attention to detail because you will be expected to make sure that your work is done right.
Attention to detail
You must show good attention to detail because you will be expected to make sure that you do detailed work like cleaning all of the small parts, polishing anything that needs polishing, drying all of the small parts using a dryer, so they don’t rust, etcetera.
Accuracy

Accuracy is essential, and you will be expected to show attention to detail and perform accurate work such as cleaning small parts, polishing anything that needs polishing, drying small parts with a dryer, so they don’t rust. You will also be required to take prescription drugs as they are required by the Army.
With the safety of our nation at stake, we can’t afford to make any mistakes. That’s why this job requires a great deal of accuracy and attention to detail, as well as a strong interest in knowledge about how these guns work.
Interest in working with weapons
You ought to know how to use and take apart weapons. You will also be expected to clean them and make sure that they are up to military standards, which is not always easy. You will be examined on your ability to put a weapon together, function it properly and perform routine maintenance on the weapon. Some of the things you will be required to do are disassemble, clean, inspect and reassemble all types of weapons.
However, it is ok if you don’t ever need to have worked with firearms before. Instead, you should be serious about this career even if you’ve never worked with them before since it’s something that you will get better at as time goes along. You’ll get more comfortable with handling them and fixing them while also learning more about how they work.
Science and math skills
You are not required to have any science or math classes, but you are required to have good knowledge of math because you will need to know conversion percentages, measurements, etcetera. You’ll need to know music theory, physics, chemistry, and engineering as well as how guns work since you’ll be working with each one of them on a daily basis and because you will need it for understanding how different kinds of weapons work involves the laws of physics. You can do that by talking to staff members who work with them regularly, or by simply asking the internet for more information if you don’t know everything already. If you’re interested in repairing and maintaining these weapons, then you’re probably also very interested in physics and other sciences. You must be able to understand how the weapon works, what parts are used for, and how they work to get it back into working order. You must also be able to perform and understand written and verbal instructions.
Teamwork experience
Experience in working with others is also important. This job requires teamwork between you and others in order for things to go smoothly, so be prepared for that. The Army wants you to work well with others and be able to assist them as needed. Even though you’re the one who’s repairing the weapons, you’ll need other soldiers there to help make it a smooth process instead of a difficult one.
Job Responsibilities
There are 3 main responsibilities of MOS 91F:
Repair firearms

- Conduct repairs on all types of weapons, maintain records on weapon and ammunition receipt and disposition.
- Test firearms to ensure the quality of repairs.
- Operate, maintain, and repair automatic weapons such as Assault Weapons or Machine Guns
Safe firearm use

- Use, inspect and repair weapons to ensure they are safe and ready for use by the military.
- Use firearms on a daily basis.
- Test and conduct repairs on weapons to ensure quality work.
Follow all safety procedures

- Use safety devices to ensure that the weapon is safely clear of other objects while being transported.
- Follow all safety procedures when cleaning weapons, ensuring that dirt doesn’t enter the weapon.
- Know how to handle a gun in case of emergency; make sure there are no rounds inside the magazine or chamber which could cause injury or death in an emergency situation. If any rounds are found in the gun during the inspection, make sure they are removed before activating it completely and inspecting it for other defects; otherwise, it can cause injuries or worse if activated while someone is standing next to it or walking by it without having time to get away from the danger zone.
Other responsibilities

- Determining the quantity and inventory status of all small arms/artillery items required to establish an immediate combat reserve and a rapid re-supply program
- Ensuring that time, manpower, and equipment allocation are sufficient to accomplish the work in a timely manner.
- Inspect all materials to be furnished under contract prior to approval.
- If required, fix elevation systems and mounts, repair sights and other sighting equipment, fill ammunition crates
- Conducting standard and malfunction testing, firing and recoil measurements, reloading procedures, and diagnostic tests for small arms weapons systems such as rifles, machine guns, grenade launchers, mortars, and cannons.
- Enforcing safety rules at the range and assisting in setting up for test firings/measurements by loading ammunition magazines with appropriate ammunition.
Career Opportunities

The Small Arms/Artillery Repairer (MOS 91F) career is a military occupation that deals with the repair, maintenance, and testing of small arms and artillery weapons. Soldiers in this MOS are also responsible for inspecting, maintaining, and storing small arms and artillery weapons.
Small Arms/Artillery Repairers can receive on-the-job training related to tasks they will be performing as well as formal technical training from the Military Occupational Specialty’s Schoolhouse or from a college or university accredited by one of the non-military regional accrediting associations.
Electrical Engineering Technicians
An electrical engineering technician performs a variety of maintenance functions on communication and electronic equipment to ensure that it continues to function at optimum levels within specifications or user expectations. These tasks may include replacing defective parts, repairing and testing wired and wireless communication and signal equipment. An electrical engineering technician performs a variety of maintenance functions on communication and electronic equipment to ensure that it continues to function at optimum levels within specifications or user expectations.
These tasks may include replacing defective parts, repairing and testing wired and wireless communication and signal equipment. Engineers who work in this field evaluate, repair, and improve electrical, electronic, and telecommunications equipment that is used in factories, offices, airports, and ships, as well as telephone networks. Usually, these tasks are performed on large electronic equipment such as lighting control systems or machine tool systems.
Electrical engineering technicians may be required to perform a variety of tasks, including testing electrical components and circuits using test equipment such as multimeters. They may also be required to troubleshoot electrical problems with computers or other small electronics equipment.
Explosives Workers
Explosives workers include those workers who manufacture explosives, as well as those who test and regulate their use. Some create fireworks displays for public entertainment. Explosive workers may be found in a factory or a laboratory setting where they handle fire and fire-producing chemicals. Explosives workers must have a keen understanding of the chemical reactions that produce explosive charges and know how to handle explosives safely. They must also be able to perform mathematical calculations to determine the exact amount of explosives needed for a task.
Ordnance Handling Experts
Ordnance handling experts examine, classify, set up, and test small arms and related ammunition. They move ammunition from storage areas to shops to test weapons. In the field, ordnance handling experts use hand or power testers to inspect weapons for live ammunition. They learn about ammunition construction, the range safety, and the care and feeding of small arms. Ordnance handling experts must have a keen understanding of a weapon system’s capabilities and limitations. They can work in a laboratory setting or in an industrial setting.
Maintenance and Repair workers
Maintenance and repair workers clean, maintain, adjust or repair various items such as aircraft engines or computers, or other electronic equipment. They may be assigned any of a number of maintenance and repair duties in factories, offices, and other locations. They use hand or power tools and equipment such as soldering irons and voltmeters to fix or adjust parts. They may be called upon to conduct tests, such as measuring voltages of electrical equipment using a multimeter. These tasks include inspecting and adjusting machines and tools to ensure they operate effectively, maintaining electrical wiring and equipment, repairing boilers or the alternators in electric motors, or repairing plumbing systems. They can work in an office environment, making repair calls to technicians who travel from facility to facility. An office environment does not usually require the same level of responsibility as working in a factory or manufacturing plant.
A maintenance and repair worker may work alone, with others, or in a group, depending on the task or project at hand. They might be called upon to inspect equipment through visual observation or through the use of a variety of instruments.
Work for gunsmith or firearms manufacturers

Working for a firearm manufacturer or a gunsmith involves a great deal of mechanical skill and knowledge. The skilled worker in this field must have extensive knowledge of guns, weapons, ammunition, and their components. He must have the ability to produce parts from drawings, use hand tools and be able to test to his own satisfaction that all parts will work correctly. He must be mechanically inclined to get the best performance from the weapon he is producing. This individual would be responsible for powder charges, parts quality control, and the assembly of firearms. This person would also maintain logs of materials used in production and write specifications or plans for future developments.
Summary of MOS 91F
The 91F is an armor and artillery repairer who works on vehicle and weapon systems. They perform battlefield recovery of damaged vehicles, which may include expedient emergency repairs to return a vehicle to operational status or salvage for later overhaul. They also perform maintenance as required by the operator’s manual or as directed by appropriate technical manuals, including those published by the manufacturer; apply lubricants; clean exterior surfaces; and replace the defective part.
FAQs
How long is AIT for MOS 91F?
AIT for MOS 91F is 10weeks of Basic Training and 13 weeks of Advanced Individual Training.
What is Mos small arms repairer?
MOS 91F’s title is Small Arms and Artillery Repairer. A small arms repairer helps maintain the weapons systems on a ship, including weapons control, gun mounts and turrets, and utility systems. They may also install ammunition hoists, mechanical-automatic guns, or other fire control equipment.
Does 91F require a security clearance?
No Department of Defense security clearance is required for the 91F Military Occupational Specialty (MOS).
Does a 91F see combat?
No, 91F’s are not trained in direct combat. However, they may be called upon to help with shipboard or shore bombardment.