Small Arms/Towed Artillery Repairer

You are the new set of hands in the armament shop. The battalion's rifles do not clean themselves and the arms room sergeant does not know your name yet — your job for the next year is to change both of those facts.

You came out of roughly 15 weeks of AIT at Fort Gregg-Adams and now you live in the battalion arms room or in the Direct Support shop attached to a brigade support battalion. You strip, inspect, and function-check M4s and M16s by the rack — 50 weapons before lunch is a normal Tuesday. You learn headspace and timing on the M2 heavy machine gun, the timing procedure on the MK19 grenade launcher, and you use the gauge set on the M240 until the numbers are reflexive. You handle the DA Form 2404 (Equipment Inspection and Maintenance Worksheet) on every weapon that comes through the window and you log every finding. The work is fine-motor, bench-level precision — wrong gap on the gas tube plug, wrong timing setting on the MK19, and the weapon either won't function or becomes dangerous.

• 01Perform a complete function-check on the M4/M16 per TM 9-1005-319 series and find timing and headspace deviations before returning the weapon to the arms room.
• 02Set headspace and timing on the M2 .50-cal heavy machine gun per TM 9-1005-213 series — this is a safety-critical procedure and wrong kills soldiers.
• 03Time the MK19 grenade launcher to spec per TM 9-1010-230 series — headspace gauge, timing gauge, bolt timing checked in sequence.
• 04Inspect, gauge, and diagnose the M249 SAW and M240B/G machine guns per TM 9-1005-338 and TM 9-1005-239 series — chamber gauge, piston headspace, barrel extension wear.
• 05Perform a complete annual/semi-annual arms room serviceability inspection on a rack of assigned weapons — DA Form 2404 findings written up, conditions clear, parts on order.
• 06Read and use the Operator, Unit, and Direct Support Technical Manuals for every weapon system the unit owns — the answer is in the manual, not in the senior soldier's memory.

• —TM 9-1005-319 series — M4/M16 series Carbine/Rifle, Operator, Unit, and DS Maintenance Manuals (the manual you touch every single day).
• —TM 9-1005-213 series — M2 .50-cal Machine Gun, including HB and QCB variants — headspace and timing are the safety-critical tables.
• —TM 9-1005-338 series — M249 Squad Automatic Weapon, all variants.
• —TM 9-1005-239 series — M240 Medium Machine Gun, all variants.
• —TM 9-1010-230 series — MK19 Grenade Launcher, Mod 3.
• —DA PAM 750-1 — Commander's Maintenance Handbook (the reg that governs what you sign and what you red-X).

• —Complete and accurate DA Form 2404 on every weapon inspected — no blank fields, no estimated findings, every fault documented before the weapon goes back to the arms room.
• —M2 headspace and timing within specification per TM 9-1005-213 on the first attempt — this is a training standard, not a "close enough" judgment call.
• —Arms room Cyclic Serviceability Inspection (CSI) passed without a finding attributed to your section — the Arms Room OIC signs it; you have to produce the clean results.
• —ACFT 500+ — the shop does not exempt you from physical standards, and the platoon sergeant checks.
• —DA Form 2062 (Hand Receipt) accountability for every weapon you are custodian of — zero discrepancies between what the book says and what is in the rack.

• —Returning an M2 to the arms room without verifying headspace and timing. The crew discovers the failure on the range and the battalion CSM is calling the shop by 0900.
• —Signing a DA Form 2404 with a found fault and then not ordering the part. The next cyclic inspection opens the 2404 and finds a deferred fault with no parts on order — that is on you.
• —Mixing parts across serialized weapons. The TM requires serialized components stay with their assigned receiver — cross-contaminating parts voids traceability and creates a paperwork problem that takes weeks to unwind.
• —Skipping the chamber gauge on a returned M249 because "it looks fine." The gauges exist because barrel wear is not visible. A worn chamber returned to a gunner on a night range is a safety event.
• —Using the wrong gauge for the weapon family. The M4 headspace gauge is not the M16 headspace gauge and the markings are not always obvious to a cherry. Wrong gauge, wrong measurement, wrong call.

The good cherry 91F is the one the arms room sergeant trusts at the bench solo by month nine. By month twelve they are catching gauge deviations the previous arms room inspection missed, their DA Form 2404s are clean enough that the battalion S4 uses them as the template for the next cyclic inspection brief, and the senior 91F is already asking whether they want the M203/M320 qualifier course or the heavier weapons transition first.

You are the bench technician the shop actually runs on. The sergeant tells you what needs to go out today; you are the one who actually fixes it.

You run the Direct Support bench in a brigade support battalion or the battalion-level arms room, depending on where the Army put you. You troubleshoot beyond the operator-level tear-down — you replace bolt carrier groups, extractors, barrel assemblies, and trigger group components. You work on the M777 and M198 towed artillery pieces when the unit has them: breech inspection, recoil mechanism check, firing-pin condition, equilibrators. You maintain the shop's gauge set and you track TMDE calibration cycles on your torque wrenches and gauge tools. You start running DA Form 2404s for the section chief to sign and you are beginning to train the new privates — even if no one has formally told you to, the section needs you to.

• 01Replace a barrel assembly on the M249 and M240 to TM standard — locking pin, headspace verified after installation, range test documented.
• 02Perform a complete bolt carrier group rebuild on the M4 — extractor, ejector, gas rings, bolt face — to TM 9-1005-319 wear limits.
• 03Inspect and adjust the M777A2 recoil mechanism and equilibrators per TM 9-1015-252 — fluid level, recoil check, equilibrator pressure within published limits.
• 04Operate the section's TMDE — gauge set, torque wrench, bore-sight tools — with current calibration certs on file per AR 750-43.
• 05Run the section's parts requisition in GCSS-Army — open MRO, identify NSN, determine priority, track on-order status against the deadline weapon.
• 06Train junior 91Fs on the gauge procedures for the M2 and MK19 without giving them the answer before they find it themselves.

• —TM 9-1005-319 series — M4/M16 DS Maintenance Manual (your daily technical authority).
• —TM 9-1015-252 series — M777 Lightweight Howitzer, all maintenance levels.
• —TM 9-1005-213 series — M2 HB Machine Gun, DS Maintenance.
• —AR 750-43 — Test, Measurement, and Diagnostic Equipment (TMDE): the calibration backbone of every gauge number you trust.
• —DA PAM 750-8 — The Army Maintenance Management System (TAMMS) User's Manual.
• —STP 9-91F15-SM-TG — Soldier's Manual and Trainer's Guide, MOS 91F, Skill Levels 1-5 (your qualification reference).

• —BLC enrolled or on the schedule; promotion-point stack includes weapons quals, ASE or relevant technical credential, and verified GCSS-Army proficiency.
• —Section deadline-fault first-time fix rate measurable — the senior 91F should see it trending up on your weapons, not sideways.
• —Gauge set and TMDE calibration certs on file with no expired instruments — one out-of-cal bore gauge makes every measurement you took in the last calibration cycle suspect.
• —ACFT 540+; physical standards are not negotiable because you will deploy with your weapons and you need to be ready.
• —Zero serialized weapon traceability errors — every component that leaves the bench goes back to its assigned receiver, documented.

• —Replacing an M777 recoil cylinder and not checking the recoil-and-counter-recoil travel per TM 9-1015-252 post-installation. An out-of-spec howitzer cleared back to the gun line is a fire-mission safety event.
• —Ordering a replacement part by appearance instead of NSN. A visually identical part from the wrong part number will fit until it doesn't — usually in the field.
• —Closing an MRO in GCSS-Army before the post-repair function check is done and documented. The next inspection opens the record and the section chief is explaining a closed MRO with no road-test entry.
• —Letting an extractor spring stay "borderline" instead of replacing it before the weapon goes back out. Springs are cheap; malfunctions on a night range are not.
• —Using an out-of-cal gauge because "it was only two weeks past due." Every reading it gave you in the last cycle is now legally indefensible.

The good Specialist 91F is the bench tech the section chief sends to the deadline weapon with a deadline note that has stumped the junior armorers, because it will come back function-checked, gauged, MRO closed, and ready for dispatch. He has his BLC slate locked, his GCSS-Army account is trusted by the warrant, and by 24 months in the section chief is fighting to keep him from getting a PCS before the next M777 sustainment cycle.

You are an NCO who owns a bench section. The arms room warrant gives you the deadline list; you are responsible for what leaves your bay fixed versus what leaves it signed off.

You run a 3-5 soldier armament shop section — small arms, crew-served, or a combined shop depending on the unit's structure. You write counseling statements, you build the section's quarterly training schedule around the weapons systems you own, and you brief the maintenance status of your weapon fleet at the company production meeting. You sign for the section's gauge set, TMDE, and shop equipment. You run the field-maintenance package: when the artillery battery deploys to gunnery, you are at the FLSP (Field Logistics Support Point) conducting in-stride maintenance on recoil mechanisms, equilibrators, firing pins, and breech assemblies. Your DA Form 2404 is the legal record the battalion maintenance officer presents at the brigade CMDP inspection.

• 01Build and defend a section armament maintenance schedule — deadline list, priority weapons, parts-on-order age, and honest ETA to the arms room OIC.
• 02Conduct an Annual Weapons Qualification Inspection (AWQI) or semi-annual CSI for a battalion-size unit — DA Form 2404 for every weapon, findings briefed, parts ordered, timeline to return.
• 03Lead a field armament maintenance package at gunnery or a major exercise — M777 recoil/equilibrator maintenance, crew-served weapon repair, range-side fault diagnosis on M2/MK19.
• 04Operate GCSS-Army at the section-NCO level — open, monitor, and close MROs; track parts-on-order; produce the section armament readiness report.
• 05Train soldiers on gauging procedures for all assigned weapon systems — the section chief should not be the only person in the shop who can run the M777 recoil check.
• 06Write and defend counseling statements that track soldier development against the STP 9-91F15-SM-TG skill-level standards.

• —AR 750-1 — Army Materiel Maintenance Policy; AR 710-2 — Supply Policy Below the National Level.
• —TM 9-1015-252 series — M777 Howitzer maintenance (your most technically demanding platform).
• —DA PAM 750-1 — Commander's Maintenance Handbook; DA PAM 750-8 — TAMMS User's Manual.
• —AR 623-3 — NCOER (you write them now); AR 600-8-19 — Enlisted Promotions.
• —ATP 4-33 — Maintenance Operations; ATP 4-90 — Brigade Support Battalion.
• —TC 7-22.7 — The Army NCO Guide; ADP 6-22 — Army Leadership.

• —Wheeled Vehicle / Armament ALC graduate within the window — your SLC packet starts being discussed the day you pin SSG.
• —Section armament deadline-fault first-time-fix rate at or above the company average; DA Form 2404 quality defensible at the brigade CMDP inspection.
• —GCSS-Army MRO closure rate at or above 90% within the unit's published maintenance production window.
• —NCOERs written in measurable, defensible bullets — weapons returned to full-mission-capable status, CSI findings resolved, soldiers trained and certified.
• —ACFT 540+; section fitness on the company-level slide, and you own it.

• —Counseling soldiers verbally and then having nothing to show at a relief-for-cause. Paper exists for a reason and the captain will ask for it.
• —Signing the dispatch on a weapon your junior 91F closed in GCSS-Army without your personal function-check and gauge verification. The weapon that malfunctions on the range is traceable to your signature.
• —Hiding a CSI shortcoming from the maintenance warrant to "clean it up before the inspection." The CMDP inspector finds deferred faults on a 2404 with no parts on order and the company maintenance officer answers for it with you in the room.
• —Letting a calibration lapse on a gauge because the section is busy. Every number the section recorded in the last calibration window is now suspect and the legal liability follows the section NCOIC.
• —Building the armament maintenance schedule around what the company production meeting wants to hear instead of what the weapon fleet actually needs. The artillery battery finds out the hard way during gunnery.

The good SGT 91F runs a section whose armament readiness the battalion maintenance officer names in the slide without surprise. His junior soldiers close MROs cleanly and their DA Form 2404s pass the brigade CMDP inspection without a remark. The arms room warrant is fighting to keep him on the SLC slate because a bench section that finds and fixes the actual fault the first time is rare, and the brigade does not give up rare lightly.

The armament shop is yours to run. The warrant or the LT signs the production board; you are the one who makes sure the numbers on it are true.

You are the armament shop foreman in a brigade support battalion's maintenance company, or the senior armament NCO in an FSC with a small arms section. You manage a team of 8-15 armorers and bench technicians across small arms, crew-served, and towed artillery. You build the quarterly armament maintenance training input and you run the GCSS-Army production board at the company level. You sit on the brigade's monthly maintenance synchronization meeting and you are the senior 91F voice when the BSB commander asks why a field artillery battalion's M777 readiness rate is amber. You are also actively identifying technically gifted soldiers for the 914A Armament Warrant Officer path and mentoring their packets.

• 01Run a GCSS-Army armament production board at the company level — deadline weapon age, parts-on-order triage, mechanic-hours available vs. required, with a defensible 30/60/90 outlook.
• 02Build a Quarterly Training Brief (QTB) input that aligns armament technicians with platform sustainment training and the brigade's deployment cycle.
• 03Defend a Command Maintenance Discipline Program (CMDP) inspection at the company level — DA Form 2404 trail, TMDE calibration records, shop safety, all clean.
• 04Lead a brigade-level armament support package for a major exercise — M777 field maintenance, crew-served emergency repairs, unit-level armorer upskilling, all of it.
• 05Identify technically gifted soldiers and build 914A Armament Warrant Officer packets — the path from 91F to armament warrant is one of the strongest technical warrant tracks in the Ordnance Corps.
• 06Translate armament readiness risk into language the FSC / BSB commander can defend at brigade — what the shop owns, what needs parts, where the seam between DS and sustainment is.

• —AR 750-1 — Army Materiel Maintenance Policy; AR 710-2 — Supply Policy Below the National Level.
• —AR 700-138 — Army Logistics Readiness and Sustainability (your readiness reporting reg).
• —AR 750-43 — TMDE Policy (the calibration framework you defend at CMDP).
• —AR 623-3 + DA PAM 623-3 — NCOER (you write SGT-level evaluations now).
• —ATP 4-90 — Brigade Support Battalion; ATP 4-33 — Maintenance Operations.
• —DA PAM 750-1 — Commander's Maintenance Handbook; DA PAM 750-8 — TAMMS User's Manual.

• —SLC graduate; MLC packet built; consider the Armament Senior Sergeants or Warrant Officer Advanced Course path at Fort Gregg-Adams as a differentiator.
• —Company-level armament deadline-fault first-time-fix rate at or above the brigade average across rolling quarters.
• —CMDP inspection findings at the company level closed before the next quarterly review, with zero TMDE calibration lapses.
• —NCOER profile defensible at brigade — Most Qualified rate matching the delta between soldiers selected and soldiers evaluated.
• —914A warrant officer accession pipeline active — at least one packet moving per year from your section.

• —Inflating the GCSS-Army armament OR rate by sliding outstanding faults into "scheduled services" lanes. The brigade S4 audits the demand history and the maintenance control warrant answers with you in the room.
• —Letting a TMDE calibration lapse on gauges your section uses daily. One out-of-cal headspace gauge voids the legitimacy of every M2 and MK19 timing check the section ran in the last calibration window.
• —Authorizing a controlled-exchange of a serialized weapon component — barrel, bolt, receiver — without the DA Form 2062-R and a controlled-exchange document on file. The CSM finds the un-papered swap during the brigade CMDP walk-through.
• —Skipping the Class IX parts demand-history brief before the brigade maintenance synch. The FSC commander shows up without the data and the BSB commander asks why his armament shop foreman did not prep him.
• —Talking up the 914A warrant path to every technically sharp soldier without leveling with them on what the Armament Warrant Officer career actually looks like — duty stations, deployment patterns, technical school requirements. Mentor it honestly.

The good SSG 91F runs the armament shop the BSB commander names in the slide as "weapons are solid." He turns out one or two SGT-grade bench NCOs per cycle with measurable diagnostic skills — not parts-changers. His CMDP findings are closed before the brigade IG asks, his TMDE is in calibration, and he has a 914A Warrant Officer Armament Technician packet on the table when the company senior maintenance officer asks who is ready. The contractor at the government depot is calling; the maintenance warrant is fighting to keep him through one more rotation.

You run the platoon, the 91F pipeline, and the brigade's armament conscience. The LT or warrant signs the production board; you make sure what it says is defensible.

You run an armament maintenance platoon in a BSB maintenance company or serve as the senior armament NCO at the brigade-level staff. At the SFC level the Army's 91X consolidation means you advise across the Ordnance maintenance spectrum — small arms, crew-served, towed artillery, and the armament components of ground vehicles — not just the 91F subset. You write four to five NCOERs per cycle that set the SSG and SGT slate. You sit on the brigade maintenance synchronization meeting and you walk the line during the brigade CMDP inspection. You build the 914A Armament Warrant pipeline — identifying talent, mentoring packets, and making the case to the brigade maintenance officer when a technically superior soldier needs the path cleared.

• 01Run an armament maintenance platoon through a brigade CTC rotation — NTC, JRTC — sustaining towed-artillery and crew-served weapons readiness across the force-on-force.
• 02Defend a brigade-level CMDP inspection in the armament lane — months of preparation, DA Form 2404 trail clean, TMDE current, no major findings.
• 03Build and maintain a 914A Armament Warrant Officer accession pipeline producing at least one selected candidate per year.
• 04Translate the Ordnance sustainment-level reach-back — depot repairs, modification work orders (MWOs), TACOM-published safety messages — into language the BSB commander can defend at brigade.
• 05Mentor SSG shop foremen into shop-foreman-of-the-year candidates and SFC-board-ready NCOs.
• 06Advise the brigade S4 on armament readiness risk in terms of battlefield effect — what does a 30% M777 readiness shortfall mean for the fires battalion's call-for-fire capacity.

• —AR 750-1 — Army Materiel Maintenance Policy; AR 700-138 — Army Logistics Readiness and Sustainability.
• —AR 750-43 — TMDE Policy; AR 710-2 / DA PAM 710-2-1 — Supply Policy and Procedures.
• —AR 623-3 + DA PAM 623-3 — NCOER (your evaluations compete against every other PSG's in the brigade).
• —ATP 4-33 — Maintenance Operations; ATP 4-90 — Brigade Support Battalion.
• —TACOM-published Modification Work Order (MWO) and Safety Messages for all armament platforms — the senior NCO-level guidance traffic between the field and depot.
• —TC 7-22.7 — The Army NCO Guide; ADP 6-22 — Army Leadership.

• —MLC graduate; consider the Maintenance Senior Sergeants Course at Fort Gregg-Adams and USASMA fellowship if on the SGM track.
• —TMDE calibration across the armament platoon at 100% — no expired certs during your tenure at any CMDP inspection.
• —Brigade-level CMDP inspection passed with no senior-NCO-attributable findings.
• —914A Armament Warrant accession pipeline producing at least one selected candidate per year from your unit.
• —Platoon ACFT pass rate at or above 95%; zero relievable maintenance incidents — no controlled-exchange violations, no serialized weapon traceability breaks.

• —Letting the GCSS-Army deadline-aged report run hot on armament without framing it to brigade. The brigade S4 will brief the number; you want to be the one providing context before the BSB commander is blindsided.
• —Confusing bench-level expertise with depot-level authority. The senior armament NCO who tells the BSB that the shop can rebuild a fire-damaged M777 recoil mechanism that should go to depot loses authority with the warrant and the maintenance officer.
• —Skipping the SHARP/EO/climate piece because "maintenance is busy." Senior NCOs lose careers over command-climate findings as fast as anyone, and the armament shop is not exempt.
• —Carrying a personal disagreement with a peer PSG or the brigade arms room warrant into the BSB. Brigade-level NCOERs notice and the BSB CSM closes the door.
• —Talking up the 914A warrant path without warning soldiers honestly that the Armament Warrant career is a niche specialty with fewer duty-station options than the broader Ordnance warrant tracks. Mentor it with the full picture.

The good SFC 91F is the senior armament NCO the BSB commander and the BCT fires officer trust to walk into a CTC rotation and come back with the artillery battalion's M777 fleet serviceable, no serialized traceability break, and a platoon of SSGs and SGTs ready to take the next slot. He runs the 914A accession pipeline, his NCOERs pick the next shop-foreman slate, and when the brigade artillery battalion goes to gunnery and the recoil mechanism on tube three fails at 1800, the BSB commander sleeps because he knows the armament SFC is already on the phone with the depot and a team is on the way.

You are the senior enlisted armament voice in the BSB or on the brigade staff. The formation reads you as the reason the weapons roll.

As 1SG you run a maintenance company or FSC with an armament section — 90-130 soldiers, multiple shop disciplines, the orderly room, the supply room, and the readiness reporting. As MSG you are the brigade armament senior NCO, advising across the small arms, crew-served, and towed-artillery fleet. As SGM or CSM you set the enlisted armament maintenance standard across a BSB, brigade, or division — training, credentials, retention, and the 914A Warrant Officer pipeline. You sit in the brigade-and-above sustainment conversation alongside O-5s, the TACOM Logistics Assistance Representatives (LARs), and the depot liaison officer, and you advise on enlisted talent at echelons above brigade. You are the person who tells the brigade commander what his weapons readiness actually is — not the slide, the truth.

• 01Run a maintenance company or armament section command climate that produces gauging-proficient, ALC/SLC-graduated, deployment-ready 91F NCOs at a rate above the brigade average.
• 02Mentor a 914A Armament Warrant accession slate at the brigade or higher staff level — at least one selected per year, with the technical record and NCOER to compete.
• 03Brief the BCT or Division CG on armament and weapons-system readiness in language the CG can defend at the next higher echelon — fleet status, deadline age, TMDE calendar, what TACOM owns.
• 04Run a brigade-level armament readiness posture during deployment or major exercise — TACOM LAR interface, contractor field-service representative employment, MWO tracking, all of it.
• 05Translate TACOM/AMCOM published safety messages and Modification Work Orders (MWOs) into enlisted-talent and training decisions at the unit.
• 06Walk the armament lane during the brigade CMDP inspection and identify broken systems before the IG OC/T does.

• —AR 600-20 — Army Command Policy; AR 27-10 — Military Justice (you are in the room).
• —AR 750-1 — Army Materiel Maintenance Policy; AR 700-138 — Army Logistics Readiness and Sustainability.
• —AR 710-2 / DA PAM 710-2-1 — Supply Policy and Procedures Below the National Level.
• —AR 638-8 — Army Casualty Program (every senior NCO must know this cold).
• —TACOM and AMCOM published Maintenance Information Messages (MIMs), Safety of Use Messages (SOUMs), and MWOs for the armament fleet.
• —The 1SG Course / USASMA / SGM-A reading list — you teach doctrine and translate it down now.

• —USASMA / SGM-A completion before competing for command CSM slate.
• —Brigade-level CMDP inspection passed without senior-NCO-attributable findings during your tenure — armament lane clean.
• —Company UCMJ rate, retention rate, and SHARP/EO climate index in the top tier of the BSB.
• —Armament warrant accession pipeline (914A) producing 1+ selected per year from your unit.
• —Zero senior-NCO-level integrity, financial, fraternization, or OPSEC incidents. One ends the career permanently.

• —Going public with disagreement with the BSB or BCT commander on an armament-readiness call. Take it in the office; walk out aligned.
• —Confusing seniority with technical depth. The senior NCO who pretends to know what TACOM's depot does with a fire-damaged M777 recoil mechanism loses authority with the warrant, the maintenance officer, and the soldiers — in that order.
• —Letting a maintenance company's armament section drift on CMDP because "the warrant will catch it." You and the warrant own it together; the 1SG owns the company climate that makes the warrant's job possible.
• —Treating the 914A warrant slate conversation as a box to check. The Armament Warrant path is a niche but genuinely valuable technical career; mentor it like it is and level with soldiers about the tradeoffs before they sign a packet.
• —Stopping personal physical training because you are "too senior, too shop." Soldiers stop respecting the diamond when the body stops carrying it.

The good armament CSM / 1SG / SGM is the senior NCO the BSB and BCT commanders name without thinking. His maintenance company's armament section is the one the BCT loans to the fires brigade during NTC because it comes back with higher readiness than it left and the DA Form 2404 trail is clean enough to survive an IG walk-through. His enlisted credentialing rate is in the upper third of the Ordnance Corps. His 914A accession rate is the one other commands ask about. And when the artillery battalion's tubes go cold at 0300 the night before the decisive-action training event, the BCT commander sleeps because he knows the senior armament NCO walking the armament shop floor that night is this one.