By Duncan Horner, CEO — Arctos Industries
For Military professionals: your unit’s chain of command, applicable ARs, DA Pams, and unit SOPs should guide your specific machine gun storage procedures and regulatory compliance requirements. This article focuses on storage specifications and configuration considerations to inform equipment and infrastructure decisions.
Machine guns occupy a specific regulatory category in military armory management that most armorers understand in general terms and fewer understand in precise ones. The requirements are stricter than for individual weapons, the accountability consequences for failures are more severe, and the storage infrastructure demands are more specific. Yet machine gun storage is consistently the part of an armory where the gap between regulatory requirement and actual practice is widest.
That gap doesn’t usually exist because armorers don’t care about compliance. It exists because machine gun storage requirements are genuinely more complex, the physical storage challenges are more demanding, and the units that get it right have usually invested in infrastructure and process that many armories haven’t prioritized.
Why the Regulatory Standard Is Higher
The regulatory framework for machine gun storage reflects a straightforward reality: crew-served and automatic weapons represent a categorically different threat profile than individual weapons, and the accountability and physical security requirements are calibrated accordingly.
At the federal level, machine guns manufactured after 1986 are heavily restricted for civilian ownership under the National Firearms Act, which means any machine gun that leaves military accountability and enters civilian channels represents not just a military accountability failure but a federal criminal matter. That consequence profile drives the stricter storage and accountability requirements that govern military machine gun storage at every level of command.
Within the military regulatory framework, machine guns typically require enhanced physical security measures beyond what applies to individual weapons, more frequent inventory verification cycles, additional dual-custody requirements for certain transactions, and storage configurations that maintain component accountability alongside weapon accountability. The specific requirements vary by service branch and by weapon system, but the consistent theme is that the standard is higher and the tolerance for deviation is lower.
Armorers who apply their individual weapon accountability practices to machine gun storage without adjusting for the higher standard are operating with a compliance gap they may not be aware of until an inspector identifies it.
Component Accountability: The Most Common Failure Point
Machine gun accountability isn’t just weapon accountability. It’s component accountability, and the distinction matters enormously in practice.
A crew-served weapon system consists of multiple components that are individually serialized and individually accountable: the receiver, the barrel or barrels, the bolt and bolt carrier group, the tripod or mount, and various other components depending on the specific system. Each of these components has its own hand receipt entry, its own serial number record, and its own accountability requirement. A weapon that is physically present but missing a serialized component is not a present weapon for accountability purposes. It’s a present weapon with a missing component, which is a different and more serious finding.
The storage configuration for machine guns needs to reflect this component accountability requirement. A rack that stores the receiver without a designated, adjacent storage position for associated serialized components creates conditions where components get separated from their parent weapon, stored informally in whatever space is available, and eventually become difficult to reconcile against the hand receipt record.
Purpose-built machine gun storage configurations provide designated positions for the weapon system and its serialized components together, so the complete accountability picture for each system is maintained in a single, visible storage location. When a weapon is drawn for maintenance or field use, the components associated with it are drawn from the same position and their absence is immediately visible in the storage configuration rather than something that has to be reconstructed from documentation.
Explore DASCO military machine gun storage configurations for purpose-built options designed around the component accountability requirements that crew-served weapon storage demands.
Physical Security Requirements That Generic Storage Doesn’t Meet
The physical security requirements for machine gun storage exceed those for individual weapon storage in most regulatory frameworks, and generic armory storage infrastructure frequently doesn’t meet the higher standard even when it meets the standard for individual weapons.
Enhanced physical security for machine gun storage typically means heavier gauge construction, additional locking points, more robust anchor requirements, and in some cases specific vault or safe-equivalent standards depending on the classification of the weapon system and its associated ammunition. The specific requirements should be confirmed against your applicable regulatory guidance, but the consistent principle is that machine gun storage needs to be specified and verified against those requirements explicitly, not assumed to be compliant because it meets the individual weapon standard.
Access control for machine gun storage frequently carries dual-custody requirements that don’t apply to individual weapon storage. Dual custody means that access to the storage requires the simultaneous presence and authorization of two qualified individuals, typically the armorer and a commissioned or warrant officer, or two authorized NCOs depending on the unit SOP. A storage system that doesn’t physically support dual-custody access, meaning one that can be opened by a single credential holder, doesn’t meet the dual-custody requirement regardless of what the procedure says.
This is a specification point that matters when evaluating storage systems. The access control architecture needs to support dual-custody as a physical requirement, not just a procedural one. A system that logs two users but can be physically opened by either one independently doesn’t enforce dual custody. A system that requires simultaneous presentation of two credentials to open does.
Barrel Accountability: A Specific Problem With a Specific Solution
Many machine gun systems carry multiple barrels as part of the authorized basic load, and barrel accountability is one of the most consistently problematic areas in machine gun storage management. Barrels are serialized, individually accountable, and physically awkward to store in a way that maintains clear individual identification and prevents commingling between weapon systems.
The common failure mode is barrel storage that groups barrels by weapon type without maintaining individual weapon system association. A storage solution that holds six M240 barrels in a common rack without clear individual assignment to specific weapon systems creates conditions where barrels get swapped between systems informally, serial numbers aren’t checked at issue and turn-in, and the hand receipt record eventually diverges from the physical assignment reality.
Individual barrel storage positions with clear weapon system association, physically adjacent to the associated receiver storage, maintain the accountability connection that the hand receipt requires. Each barrel has a home that is visually and documentarily connected to its parent weapon system, and any separation of barrel from receiver is immediately visible in the storage configuration.
What Units Get Wrong About Inventory Frequency
Machine gun inventory frequency requirements typically exceed those for individual weapons, and units that apply their standard inventory cycle to machine gun storage without adjusting for the higher requirement are non-compliant in a way that may not surface until an inspection.
The specific frequency requirements vary by regulation and by command, but the practical implication is that machine gun accountability needs to be verified more often than individual weapon accountability, with each verification documented to the standard the regulation requires. A unit that conducts weekly individual weapon accountability and monthly machine gun accountability when the regulation requires more frequent machine gun verification has a compliance gap that exists independently of whether the physical inventory is actually correct.
Documentation of each inventory event needs to capture not just the weapon count but the component count, the condition of each system, and the identity of the individuals who conducted and witnessed the inventory. An inventory that happened but wasn’t documented to the required standard is functionally equivalent to an inventory that didn’t happen from a compliance standpoint.
The Connection Between Machine Gun and Launcher Storage
Units that store machine guns frequently also store launchers, tubes, and crew-served weapon systems that carry similar or overlapping regulatory requirements. The accountability and physical security principles that apply to machine gun storage generally extend to these systems, and units that have addressed machine gun storage without addressing associated heavy weapon storage have often solved half the problem.
The physical storage challenges are different for launchers and tubes given their dimensional requirements, but the accountability framework is consistent: component-level accountability, enhanced physical security, dual-custody where required, and documentation that supports the verification frequency the regulation mandates.
Dedicated DASCO launcher, tube, and mortar storage solutions address the dimensional and accountability requirements of heavy weapon storage alongside the machine gun storage line, allowing units to build a consistent storage environment across their crew-served weapon inventory rather than addressing each system type separately.
Making the Case for Infrastructure Upgrades
Armory NCOs who identify machine gun storage infrastructure gaps frequently face the challenge of making the case for upgrades through a chain of command that doesn’t always have direct visibility into the compliance exposure the current configuration creates.
The most effective approach is a documented gap analysis that connects the current storage configuration to specific regulatory requirements, identifies where the configuration doesn’t meet the standard, and quantifies the compliance risk in terms the chain of command can evaluate. A finding during an IG inspection that results from a storage infrastructure gap that was identified and not addressed is a different outcome from a finding that results from an infrastructure gap nobody knew existed.
Framing the upgrade request around regulatory compliance and inspection risk rather than operational convenience tends to produce better results than a general request for better equipment. The chain of command can evaluate a compliance gap. Evaluating a convenience improvement is more difficult when competing against other budget priorities. Read more practical guidance for military armory management on the Arctos Industries blog.
Want to assess whether your machine gun storage configuration meets the regulatory and physical security requirements applicable to your unit?
We work with unit armories to evaluate current configurations against compliance requirements and identify storage solutions that close the gaps before an inspector does.
Reach out at arctosindustries.com/contact or visit arctosindustries.com to learn more.
For Military professionals: your unit’s chain of command, applicable ARs, DA Pams, and unit SOPs should guide your specific machine gun storage procedures and regulatory compliance requirements. This article focuses on storage specifications and configuration considerations to inform equipment and infrastructure purchasing decisions.
