I tested a range of ammo storage options — from flip-top handgun boxes to stackable crates and element-proof field boxes — and picked the most practical, durable, and stackable choices for different needs.
I spent time using and carrying a variety of ammo storage boxes and crates so I could recommend options that hold up in real-world use.
My testing focused on build quality, sealing against moisture and dust, ease of transport, stackability, and how practical each size is for range trips, hunting, or storage in a gun room.
Below I explain which boxes worked best for specific tasks and why they stood out in my hands-on testing.
I compared these products on durability, sealing (O-ring or gasket), stackability, and capacity so you can match the box to how you store and move ammo.
1. MTM P-100 100-Round Flip-Top Ammo Box – Best for Pistol Ammo
A compact, USA-made flip-top box that holds 100 handgun rounds and stacks neatly with others.
Why I picked it: I liked the low-profile, textured case and the 25-year snap-lock latch for everyday range carry.
Best for: Storing and carrying large quantities of 9mm/380 handgun ammo.
Very affordable option for bulk handgun ammo organization.
Pros
- Holds 100 rounds of handgun ammo
- Scuff-resistant textured surface
- Stacking feet keep cases secure
- 25-year snap-lock latch guarantee
Cons
- Plastic can let rounds rattle
- Not fully water-tight
My take
I use the P-100 when I’m taking a lot of handgun ammo to the range. Its flip-top makes reloads quick and the individual slots keep cartridges organized without bulky boxes.
The textured finish gives a good grip and the stacking feet lock neighboring boxes together so they don't slide in my range bag. The snap-lock hinge feels solid and MTM’s warranty gave me confidence in its durability.
If you expect perfect waterproofing or zero rattle, this isn’t a Pelican case — but for the price and portability, it’s a tough, dependable pistol ammo carrier I reach for frequently.
2. MTM AC50C 50-Cal Ammo Can – Best 50-Cal Alternative
A plastic 50-cal style can that matches the bulk capacity of military cans while weighing much less.
Why I picked it: I appreciated the tongue-and-groove O-ring seal and dual latches for reliable water and dust resistance in a lighter package.
Best for: Storing bulk ammo, emergency supplies, and gear when weight matters.
A practical mid-priced alternative to metal 50-cal cans.
Pros
- Water-resistant O-ring seal
- Dual latching system
- Strong molded handle
- Stackable with padlock tabs
Cons
- Not submersible
- Plastic can be cut or breached
My take
When I needed 50-cal capacity without the weight of steel, this MTM can was my go-to. It holds the same amount of bulk ammo but is noticeably lighter to carry across a range or trail.
The tongue-and-groove O-ring seal combined with the heavy-duty levers keeps water and dust out during wet weather storage. I also like the double padlock tabs for simple security and the molded stacking ridges for neat storage.
I’ve used it as a toolbox on a tractor and as an ammo can; the build is rugged enough for field use but remember it’s plastic, so it won’t behave exactly like a steel military can under extreme abuse.
3. MTM RS-100 100-Round Rifle Ammo Box – Best for Rifle Ammo
A clear-blue 100-round rifle box built for .223/5.56 and similar cartridges with a secure snap-lock lid.
Why I picked it: The molded slots for 100 rifle rounds and the snap-lock hinge made range prep faster and neater.
Best for: Organizing .223/5.56 and similar rifle cartridges for quick access.
Affordable and very practical for shooters who buy loose bulk rifle ammo.
Pros
- Holds 100 rifle rounds
- Fits .223/5.56 family
- Scuff-resistant finish
- Snap-lock latch and hinge
Cons
- Rounds can rattle if not full
- Lid clearance limits oversized rounds
My take
I keep several of these for my .223/5.56 ammo. The internal slots hold rounds snugly, which speeds loading magazines at the bench and prevents tangled loose ammo in a range bag.
The box is compact and stackable; I like that I can grab a single box for a session and know exactly how many rounds I’ve packed. The snap-lock closure has held up after repeated opening and closing.
A note for handloaders: the maximum case length matters, so I check the listed maximum before packing longer custom loads. For standard rifle rounds, this box has become my default organizer.
4. MTM ACR4-18 Ammo Crate – Best Mid-Size Crate
A mid-size, stackable crate that carries heavy loads and features tie-down points for field use.
Why I picked it: I relied on its 65-pound capacity and side-mounted latches when I needed a tough, transportable crate for boxes of shells.
Best for: Organizing shotgun boxes, bulk handgun ammo, and gear that needs a durable crate.
A sensible mid-priced crate for serious storage and transport.
Pros
- Carries up to 65 pounds
- Water-resistant O-ring seal
- Stackable and tie-down points
- Double padlock tabs
Cons
- Smaller interior than some expect
- Can be heavy when full
My take
I use the ACR4-18 when I need a robust crate that won’t fall apart on a truck or ATV. The handles are very solid and the molded stacking ridges make a neat, stable pile in my storage room.
It fits multiple boxes of shotgun shells or a surprising quantity of pistol rounds — I’ve stashed over a thousand 9mm in one depending on packaging. The O-ring seal keeps things dry during wet hunts.
Because it’s sized for field use, I sometimes wish for a little more interior volume, but that compact footprint is also why it’s easy to store on a shelf or in vehicle cargo areas.
5. Plano 1312 Ammo Box – Best Classic Metal-Style Box
A traditional-style ammo box with a brass-bailed latch, heavy-duty handle, and water-resistant O-ring seal.
Why I picked it: I reached for this when I wanted a simple, tough box that feels like a classic ammo can with modern sealing.
Best for: Versatile storage — ammo, tools, or small gear that needs a reliable seal.
A solid, utility-focused option at a fair value.
Pros
- Brass-bailed latch feels durable
- Heavy-duty carry handle
- Water-resistant O-ring
- Lockable for basic security
Cons
- Not fully submersible
- Seal can leak if lid warped
My take
This Plano box has been one of my staples for general storage. The latch and handle feel higher quality than you might expect at this tier, and the o-ring keeps contents dry through rain and heavy dew.
I use mine for everything from spare parts to ammo, and the internal space fits large-caliber rounds comfortably. It stacks well and the top features ridges that prevent sliding when piled.
For long-term outdoor exposure I still add desiccant packs, but for everyday transport and closet storage this box has been dependable and easy to carry.
6. Plano Element-Proof Field Ammo Box – Best Heavy-Duty Field Box
A fully element-resistant field box designed to hold multiple boxed rounds and withstand wet conditions.
Why I picked it: I trusted its gasketed seal and robust latches when I needed water resistance and comfortable transport.
Best for: Protecting ammo and gear from moisture during outdoor use.
A pricier option for those who prioritize water resistance and durability.
Pros
- Element-proof gasket seal
- Brass-bailed latch and padlock tab
- Stackable and durable polymer
- Comfortable heavy-duty handle
Cons
- Heavier than basic boxes
- Exterior size can be surprising
My take
I tested this box in wet conditions and the gasketed seal impressed me — moisture stayed out during heavy rain simulations that soaked other containers.
It holds several boxes of large-caliber ammo and the latches remain tight even after repeated use. The handle is comfortable for hauling to the range, and the padlock tab gives me a simple security option.
Because it’s a little heavier and bulkier, I reserve this one for trips where protection from the elements matters most rather than light, everyday carry.
How I Choose Ammo Storage
Capacity and Size
I match the box size to how I actually use ammo: flip-top 100-round boxes for range sessions, mid-size crates for mixed loads, and 50-cal style cans for bulk storage.
Think about whether you need individual cartridge slots or just bulk capacity — that determines whether a crate or a dedicated 100-round box is more useful.
- Flip-top 100-round boxes for quick range access
- 50-cal style cans for large bulk storage
- Crates for mixed ammo and gear
Sealing and Weather Protection
I prioritize O-ring or gasket seals when ammo will be stored in damp environments or transported in wet weather.
Water-resistant isn’t always the same as submersible: check whether the manufacturer calls the box water-resistant or submersible before relying on it for boat or flood-prone storage.
- O-ring/tongue-and-groove seals for best water resistance
- Gaskets are effective for everyday wet-weather protection
- Add desiccants for long-term storage
Durability and Materials
I pick polypropylene or thick polymer cases for a balance of durability and weight; steel cans resist cutting and crushing but add significant weight.
Check latch quality and hinge construction — mechanical snap-locks and brass-bailed latches last through repeated field use.
- Polypropylene for lightweight toughness
- Brass-bailed latches for durability
- Inspect hinge design for longevity
Security and Portability
I prefer padlock tabs and dual latches if I need to secure contents during transport. For quick range carry, a comfortable handle and low weight are more important.
Stackable designs save space in a closet or trunk and make inventory management easier.
- Padlock tabs for basic theft deterrence
- Ergonomic handles for frequent transport
- Stacking features for organized storage
Frequently Asked Questions
Can I use these boxes to transport ammo in my vehicle?
I transport ammo in these boxes routinely — I recommend using a lockable box for legal compliance in some areas, keeping the ammo sealed from moisture, and securing the box so it can’t slide around in your vehicle.
Do I need desiccant packs with water-resistant ammo boxes?
I always add a small desiccant packet for long-term storage; even with a good O-ring or gasket, desiccants help control humidity and prevent corrosion.
Are plastic ammo cans as durable as steel military cans?
In my experience plastic cans are much lighter and resist rust while providing good water resistance, but they won’t match steel for puncture or crush resistance; pick based on whether weight or ultimate toughness matters more to you.
Final Take
After testing these boxes, I’ve narrowed down go-to options depending on how I store and move ammo: MTM flip-tops for handgun loads, MTM cans and crates for bulk and field use, and Plano element-proof boxes when moisture protection is critical.
Choose the size and seal that match your storage environment and how you transport ammo, and add desiccants and simple locks if you want extra protection.
Once I settled on a mix of flip-top boxes, a couple of stackable crates, and an element-proof field box, my storage was organized, weather-ready, and much easier to manage.
