AR 190-11: Arms Room Access, Inventories, and Loss Reporting

AR 190-11 is the Army regulation that governs the physical security of arms, ammunition, and explosives. It sorts every weapon, round, and explosive device into one of four Security Risk Categories and then attaches escalating requirements to each tier: how the item is stored, who can touch it, how often it is counted, how fast a loss must be reported, and how it moves from one location to another. It reaches active Army, Reserve components, National Guard, ROTC, and civilian contractors who work with these materials.¹

The Four Security Risk Categories

Every requirement in the regulation flows from the category the item sits in. Higher categories are treated more strictly because the items are more lethal, more portable, or both.²

Category I is the highest risk: portable, ready-to-fire missiles and rockets such as Stinger and Dragon systems.
Category II covers light automatic weapons up to .50 caliber and grenade launchers.
Category III sweeps in ammunition and explosives not already in I or II, including bulk high explosives, land mines, and grenades.
Category IV is the lowest risk: non-automatic firearms like pistols, rifles, and shotguns.

Category IV still carries real security obligations. The tiers exist to concentrate the strongest protections on the deadliest assets, not to relax handling on the rest.

Arms Room Construction and Locks

Permanent armories are built to resist forced entry. Walls must be reinforced concrete or solid masonry at least eight inches thick, and floors and ceilings must match that resistance. Windows are generally prohibited. Any ventilation opening larger than 96 square inches has to be fitted with steel bars or grating to block human entry.²

Locking hardware works in layers. High-security padlocks built to military specifications secure primary access points, while lower-security padlocks handle secondary items like individual weapons racks inside an already-hardened room. Heavy-duty hasps keep an attacker from prying the lock assembly off the door.

Any facility storing Category I or II items must have an Intrusion Detection System. Sensors detect unauthorized entry, and audible and visual alerts go to a central monitoring station. When an alarm triggers, the response force has to arrive within 15 minutes. The monitoring station is also alerted whenever the system is turned off, malfunctions, or enters maintenance mode, so there is no silent gap in coverage.

Who Can Access an Arms Room

Uniform alone does not grant access. Before letting anyone into an arms room unescorted, commanders screen the person’s character, judgment, and stability on DA Form 7708, the Personnel Reliability Screening and Evaluation form. The review draws from personnel records, security files, medical records, law enforcement databases, and drug-testing results.³ Substance abuse, a court-martial or civilian conviction, mental health concerns, or negligent duty performance can disqualify someone. A National Agency Check surfaces criminal history and derogatory background information. Civilian and contractor personnel go through the same process but are exempt from the medical screening portion.¹

Federal law adds an absolute bar. Under 18 U.S.C. § 922(g)(9), anyone convicted of a misdemeanor crime of domestic violence is permanently prohibited from possessing any firearm or ammunition.⁴ This is the Lautenberg Amendment, and it removed the exemption that previously covered military and law enforcement personnel. A qualifying conviction ends a soldier’s ability to handle weapons on duty regardless of rank or assignment.⁵

Cleared personnel appear on the commander’s unaccompanied access roster, which along with a notification roster goes to the alarm system administrator so those individuals can receive PIN codes for the intrusion detection system. Both rosters must be signed by the current commander and cannot be dated more than 30 days apart. A change of command or armorer rotation triggers an immediate update.¹

When a completed DA Form 7708 is not yet in hand, dual-person authority fills the gap. Two individuals must enter their alarm codes together to open or close the facility, and the arrangement cannot last more than 30 days.

Inventories, Keys, and Custody

Accountability runs on a layered schedule. A monthly serial-number inventory covers every weapon and sensitive item in the arms room and is conducted by a disinterested officer or NCO without routine access to the facility. That person verifies every serial number against the property book one item at a time. Category I and II items are counted daily whenever the storage facility has been opened. Semiannual inventories are the broadest sweep and pick up all ammunition lots and bulk explosives along with serialized weapons.²

Hand receipts and temporary loans are documented on DA Form 2062, creating a paper trail of who held each item and when. A discrepancy discovered during an inventory has to be reported immediately to law enforcement rather than quietly corrected. Custody stays unbroken from the moment an item enters the facility until it is officially expended, transferred, or turned in.

Keys get the same discipline. Every lock and key is inventoried by serial number semiannually, and records are kept for at least one year. Padlocks lacking a manufacturer’s serial number must be assigned one and inscribed directly on the lock. Keys themselves are tracked on DA Form 5513, the Key Control Register and Inventory.⁶ When responsibility for keys transfers, they go into a sealed container, and an unbroken seal proves the keys were not disturbed. Any sign of tampering forces the commander to inventory every key inside and open an investigation.

Reporting a Loss or Theft

Speed matters more than completeness when something goes missing. Commanders and custodians must report any actual or suspected loss to the supporting law enforcement agency within two hours of discovering it. The regulation is explicit that the initial notification should be as detailed as possible but should never be delayed because some information is still unknown.²

A formal written report follows on DA Form 3056 within 72 hours of the initial detection, feeding an automated tracking system. For Category I and II items, the Army Criminal Investigation Division opens a preliminary investigation regardless of dollar value. If CID finds no crime, the command initiates an administrative investigation under AR 15-6 to document what happened and assign responsibility. A commander can also order an AR 15-6 investigation for smaller losses in lower categories.

Transport and FPCON Escalation

Movement is one of the highest-risk moments in the security chain. Vehicles carrying weapons or ammunition must have locking devices and tamper-evident seals on the cargo area. Drivers stay with the vehicle unless it is parked in a secure, guarded holding area. A breakdown or accident puts the senior guard in charge of establishing a perimeter until replacement transport or additional security arrives.

Category I and II shipments require armed guards regardless of the current Force Protection Condition. This is the Constant Surveillance Service standard: the shipment is never unattended by authorized, armed personnel. Guards follow set routes and report position to dispatchers at regular intervals.

Security scales up with the threat level. At FPCON Bravo, two drivers accompany the shipment so at least one always maintains continuous observation. At FPCON Charlie, armed guards are required for all categories, not just I and II, and guards can also serve as drivers. At FPCON Delta, a separate security escort vehicle with armed guards accompanies the shipment when military air transport is unavailable. Even at normal threat levels, lower-category loads still require secure vehicles, tamper-evident seals, and accountability checks at departure and arrival.²

Privately Owned Weapons on Installations

The regulation does not stop at government property. Privately owned firearms brought onto a military installation must be registered, typically within 72 hours of arrival, with the installation’s Provost Marshal or weapons registration office. Registration captures caliber, type, serial number, make, model, and action. Failing to register can trigger UCMJ action along with applicable federal and state enforcement.

Where you live on post drives where you store them. Personnel in family housing can generally keep registered weapons in their quarters if the firearms sit in a locked container, gun rack, or approved trigger or chamber lock, with ammunition stored separately in its own locked container. Soldiers in barracks, bachelor quarters, or transient housing must store privately owned weapons in the unit arms room. Off-post storage with a family member or fellow soldier may be authorized case by case, in writing, by the unit commander. Privately owned weapons in the unit arms room follow the same checkout procedure as government property: the owner signs a hand receipt, and release is limited to authorized purposes like hunting, target practice, or competition.

Consequences for Violations

Failing to maintain the records and procedures the regulation requires exposes responsible personnel to action under UCMJ Article 92 for failure to obey a lawful regulation. Depending on severity, a court-martial can impose confinement, forfeiture of pay, and a dishonorable discharge.⁷

1
Joint Base Lewis-McChord iSportsman. JBLM Regulation 190-11 – Physical Security of Arms, Ammunition and Explosives
2
Fort Campbell iSportsman. Army Regulation 190-11 – Physical Security of Arms, Ammunition, and Explosives
3
Fort Liberty (Fort Bragg). Personnel Reliability Screening and Evaluation – DA Form 7708
4
Office of the Law Revision Counsel. 18 USC 922 – Unlawful Acts
5
U.S. Department of Justice. Criminal Resource Manual 1117 – Restrictions on the Possession of Firearms by Individuals Convicted of a Misdemeanor Crime of Domestic Violence
6
U.S. Army Recruiting Command. DA Form 5513 – Key Control Register and Inventory
7
Office of the Law Revision Counsel. 10 USC 892 – Art 92 Failure to Obey Order or Regulation