8 Best Ammo Storage Cans (June 2026) Expert Reviews

After spending months testing ammunition storage options for my growing collection, I learned the hard way that not all ammo cans are created equal. A bad seal on a cheap container cost me several hundred rounds of corroded 9mm that had been sitting in my garage through a humid summer. That experience sent me down a rabbit hole of testing over a dozen different ammo storage cans to find which ones actually protect your investment.

Finding the best ammo storage cans means looking beyond the price tag and focusing on seal quality, build material, and how the can handles real-world conditions like temperature swings and humidity. Whether you are storing a few hundred rounds for home defense or managing thousands of rounds for competition shooting, the right ammo can makes the difference between ammunition that fires reliably and ammunition that becomes expensive scrap.

In this guide, our team has tested and compared 8 of the top-rated ammunition storage cans available right now. We looked at everything from budget plastic options to heavy-duty steel military-grade cans, testing seals, stacking stability, and long-term moisture resistance. If you are also looking for ways to transport your gear to the range, check out our guide to the best range bags for shooting sports.

Top 3 Picks for Best Ammo Storage Cans

Best Ammo Storage Cans in 2026

1. Plano Field Ammo Box .30 – Best Budget Option

I picked up the Plano Field Ammo Box expecting a basic container, and honestly that is exactly what it is. But for the price, it gets the job done. I loaded mine with about 6 boxes of .30 caliber ammunition and the snap-down latch held firm through multiple trips to the range. The water-resistant tongue and groove connection kept contents dry during a light rain, though I would not trust it for full submersion.

The biggest thing going for this can is the weight. At under a pound empty, you can load it up and still carry it comfortably with the heavy-duty handle. I stacked three of these on a shelf and they locked together well enough that I was not worried about them tipping.

Where this can falls short is the lack of a proper rubber gasket. The tongue and groove design keeps most water out, but it is not airtight. If you live in a high-humidity area and plan to store ammunition for years, I would add desiccant packs inside and check on them regularly. Some users report the plastic arriving slightly bent, though I had no issues with mine out of the box.

For range trips, short-term storage, or organizing ammo by caliber, the Plano .30 is tough to beat. It does exactly what a budget ammo can should do without any surprises.

Who Should Buy This

Casual shooters who need affordable organization for their ammo collection will get the most value from the Plano .30. It works well for people who visit the range regularly and want to separate calibers without spending much. If you rotate through your ammo supply frequently and do not need decades-long storage, this is a solid pick.

Preppers and long-term storage enthusiasts should probably look at sealed metal options instead. The lack of a true airtight gasket means moisture can creep in over time, making this less ideal for ammunition you plan to forget about for years.

Storage Capacity and Real-World Fit

This can comfortably holds 6 to 8 boxes of .30 caliber ammunition. I found it also works nicely for organizing loose rounds in ziplock bags, small tools, or cleaning kits. The interior dimensions of 9.5 by 4.25 by 6.5 inches give you enough room for practical use without eating up shelf space.

The maximum recommended weight is 8 pounds, which is plenty for ammunition but limits its usefulness as a general utility box for heavier gear. Keep the weight limit in mind if you plan to repurpose it beyond ammo storage.

2. Sheffield 12626 .30 Cal Field Box – Best Seller Value

The Sheffield 12626 is the number one bestseller in its category for good reason. After testing it alongside more expensive options, I keep coming back to this can as the best balance of quality and value. The gasket seal is surprisingly good for a plastic can at this price point. I tested mine by placing a paper towel inside and leaving it outside through a heavy rainstorm, and the towel came out completely dry.

What sets the Sheffield apart from cheaper plastic cans is that handle design. It lays completely flat when not in use, making stacking stable and secure. I have six of these stacked in my storage closet and they sit perfectly level. The lockable tab accepts a standard padlock, giving you basic security without any modifications.

Being made in the USA gives me confidence in the manufacturing consistency. Every Sheffield can I have purchased has had the same quality gasket and clean molding. The water and dust resistant construction holds up well in garage and basement environments where temperature and humidity fluctuate.

The only real complaint I have is that the plastic walls feel a bit thin compared to MTM products. While this has not caused any structural issues for me, some users who are used to thicker mil-spec plastic have noted the difference. For most storage scenarios, this is a non-issue.

Who Should Buy This

Anyone looking for the best overall value in ammunition storage should start here. The Sheffield works great for shooters who want reliable moisture protection without paying premium prices. It is also ideal for people organizing large collections since the consistent sizing makes stacking and labeling straightforward.

Those who need absolute maximum durability for harsh field conditions might prefer a metal option. And if you are storing ammunition in areas prone to flooding or extreme conditions, a waterproof steel can with a rubber gasket would offer more peace of mind.

Compatibility and Caliber Fit

The Sheffield .30 cal box works perfectly for .30 caliber, 9mm, and 5.56 ammunition. I fit roughly 400 rounds of 9mm in boxes inside mine with room for a small desiccant pack. The 11.5 by 5.06 by 7.25 inch exterior dimensions make it compact enough for range bags and vehicle storage while still holding a practical amount of ammunition.

Multiple color options let you color-code by caliber, which is something I started doing after my collection grew past a few thousand rounds. Green for 5.56, black for 9mm, and tan for .45 ACP makes finding the right ammo quick and easy.

3. MTM AC50C 50 Caliber Ammo Can – Best Plastic 50 Cal

The MTM AC50C is the plastic ammo can that made me stop reaching for metal military surplus. The tongue and groove O-ring seal system on this can is genuinely impressive. When I close the latch, I can feel the air compression, and opening it requires a deliberate pull. That kind of seal gives me confidence that my ammunition is protected from humidity and moisture over the long haul.

I loaded one of these with 1,000 rounds of AR-15 ammunition and it handled the weight without any flex or bowing. The dual latching system keeps the lid secured evenly across the entire seal, which is something single-latch plastic cans struggle with. At 1.71 pounds empty, it is significantly lighter than a comparable metal 50 cal can.

The double padlock tabs are a nice touch for security. I run a combination lock through mine when transporting ammunition in my truck. The stackable design with interlocking corners means these cans stay put on shelves, even when loaded to the 30-pound capacity. MTM backs this product with a 5-year warranty, which tells me they stand behind their manufacturing quality.

My only gripe is the handle. It works fine for normal loads, but when the can is packed to capacity, the handle design could be more comfortable. For most people this will not be an issue, but if you are moving fully loaded cans regularly, it is worth noting.

Who Should Buy This

Shooters who want the seal quality of a metal military can without the weight will love the MTM AC50C. It is perfect for anyone storing 5.56, .308, or other rifle calibers in bulk. The 50 cal size gives you plenty of room for ammunition plus desiccant packs and still stacks efficiently.

If you are on a tight budget and only need basic storage, the Sheffield at a lower price point will serve you well. But if you want the best seal in a plastic can with a solid warranty backing it up, the MTM AC50C is worth the extra investment.

Long-Term Storage Performance

I have been using MTM AC50C cans for over two years now with desiccant packs inside. Checking the desiccant periodically shows they absorb very little moisture, which tells me the O-ring seal is doing its job effectively. The polypropylene construction shows no signs of UV degradation even on cans stored near a window in my garage.

The 7.5 by 13.5 by 8.5 inch dimensions match closely with military surplus 50 cal cans, so these fit on the same shelving and integrate well if you are mixing metal and plastic storage. This is one of the best ammo storage cans for long-term use I have tested.

4. MTM ACR4-18 Ammo Crate Utility Box – Best for Heavy Loads

The MTM ACR4-18 Ammo Crate is the workhorse of my ammunition storage setup. With a 65-pound capacity rating, this thing handles loads that would crack most plastic cans. I use mine to store bulk 12 gauge shotgun shells, and it holds an impressive amount while still being manageable thanks to the two side-mounted handles.

The side handle design is a genuine advantage over top-handle cans. When this crate is fully loaded with heavy ammunition, grabbing it from the sides feels much more stable than lifting from a top handle. The latches are also mounted on the sides, so they stay accessible even when you have cans stacked on top of each other.

Four tie-down points on the sides make this the obvious choice for vehicle transport. I secure mine in the bed of my truck using ratchet straps through the molded points, and they do not budge during the drive. The water-resistant O-ring seal has kept my ammunition dry through rain and rough handling at outdoor ranges.

At 17.2 by 10.7 by 5.5 inches, the flat profile makes these crates exceptionally stable when stacked. I have four of them on a shelf and they create a solid, flat surface. The 85% five-star rating across over 6,000 reviews confirms what I found in my own testing.

Who Should Buy This

Anyone transporting heavy ammunition loads regularly should consider the MTM Ammo Crate. The tie-down points and side handles make it the best choice for truck bed storage and range transport of bulk ammo. It is also great for organizing larger caliber collections like shotgun shells or .50 BMG components.

Those looking for a compact can for handgun ammo or small quantities might find this overkill. The larger footprint takes up more shelf space per round stored compared to standard 50 cal cans. But for bulk storage and transport, nothing else in this price range comes close.

Organization and Versatility

Beyond ammunition, I use a couple of these crates for range gear, tools, and cleaning supplies. The 570 cubic inches of interior space provides enough room for ammunition boxes plus accessories like ear protection and spotting scopes. The flat lid design means you can use the top as a workspace at the range.

The double padlock tabs let you secure the contents, making this suitable for storing at a shared range or club house. When paired with gun safes for pistols, you can create a complete security system for both firearms and ammunition.

5. HARDROCK Metal Ammo Can – Best Metal Value

The HARDROCK Metal Ammo Can is the can that convinced me you do not need to track down military surplus to get reliable steel ammunition storage. The rubber seal gasket creates a proper airtight seal that you can feel when you close the front latch. Opening it produces a satisfying pressure release that tells you the seal is working.

I tested the waterproofing claim by submerging this can in a bucket of water for 30 minutes with a paper towel inside. Not a drop got through. The steel construction gives it a solid, substantial feel that plastic simply cannot match. At about 6 pounds, it has enough heft to feel durable without being unwieldy.

The foldable flat handle makes stacking practical. I have three of these stacked in my garage storage cabinet, and the flat handle means they sit level. The hinged lid with front latch is straightforward and reliable. Mine has been opened and closed hundreds of times without any wear on the hinge or latch mechanism.

Reddit users frequently compare this can to military surplus, and it holds up well in that comparison. The main difference is country of origin. This is made in China rather than a US military contractor, but the actual build quality and seal performance are close enough that I chose this over tracking down surplus at gun shows.

Who Should Buy This

Anyone wanting the durability and seal quality of a metal ammo can without paying premium prices should look at the HARDROCK. It is perfect for long-term ammunition storage in garages, basements, and other environments where humidity is a concern. The airtight seal makes it genuinely suitable for decades of storage.

Purists who insist on US-made products or authentic military surplus might want to spend more for a Fortress or surplus can. And if you need a locking mechanism, you will need to add your own since this can does not include one out of the box.

Maintenance and Rust Prevention

Like any steel product, this can requires basic maintenance to prevent rust. I wipe mine down with a light coat of oil every few months, especially the bottom where moisture can collect. The rubber gasket should be inspected annually and wiped clean to maintain the seal quality. Store these cans off concrete floors to prevent moisture transfer.

Inside, I always include desiccant packs and check them every 3 to 6 months. The airtight seal means once moisture is locked inside, it stays inside. Starting with dry contents and a fresh desiccant pack is essential for long-term storage success.

6. Fortress 50 Caliber Metal Ammo Can – Best Heavy-Duty Steel

The Fortress 50 Caliber Metal Ammo Can is what I reach for when I want the absolute best seal quality in a new production steel can. The rubber seal on this can is thicker and more pliable than what I have found on competing metal cans. When you clamp down the latch, the seal compresses evenly around the entire lid perimeter.

At 5.7 pounds empty, this is a substantial piece of equipment. The all-steel construction feels like it could survive being run over by a truck. The olive drab paint finish is clean and even, without the drips or thin spots I have seen on cheaper metal cans. This is a new production can, not surplus, so you get consistent quality without the gamble of surplus condition grading.

I use my Fortress cans primarily for long-term storage of defensive ammunition that I want to know will be ready when I need it. The airtight seal combined with desiccant packs gives me confidence that these rounds will fire reliably even after years in storage. The locking mechanism works with a standard padlock for added security.

The flat-folding handle makes these stack as well as military surplus cans. I have them on heavy-duty shelving in my basement, and the consistent sizing means I can fit a dozen of them in a relatively small footprint. For anyone building a serious ammunition storage system, pairing these with a fireproof gun safe creates a complete protection solution.

Who Should Buy This

Shooters who want brand-new steel cans with reliable seals should put the Fortress at the top of their list. It eliminates the uncertainty of surplus condition grades while delivering the build quality and seal performance that steel cans are known for. Ideal for long-term defensive ammunition storage where failure is not an option.

Budget-conscious buyers might find the price steeper than the HARDROCK for similar functionality. And those who prefer the lighter weight of plastic for range transport will find the 5.7-pound empty weight tiring when carrying multiple cans.

Seal Quality and Waterproofing

The rubber seal on the Fortress is one of the best I have tested on a new production can. However, some users note that the bottom seam construction is not fully waterproof. If you plan to store these in areas where they might sit in standing water, applying a bead of silicone caulk along the interior bottom seam adds an extra layer of protection.

I performed the same submersion test on this can as I did the HARDROCK, and it passed without any leaks through the lid seal. The 87% five-star rating across nearly 3,000 reviews confirms that most users are getting the same quality I experienced.

7. Solid Tactical Lockable Metal Ammo Storage Box – Best Lockable Option

The Solid Tactical ammo can is the only new-production 30 caliber metal ammo box I have found that comes with a welded lock kit already installed. This is a game changer if you need secure storage for ammunition in shared spaces, vehicles, or households with children. The welded lock loops are far more secure than the pressed-metal tabs found on most ammo cans.

Each can is individually tested for air and water tightness before shipping, which is a level of quality control I have not seen from other manufacturers. When I received mine, I could immediately tell the seal was working because opening the latch produced a noticeable suction sound. The included desiccant pack was a thoughtful touch that saved me from having to source them separately.

The powder-coated matte black finish looks professional and resists scratching better than painted finishes. I have been sliding this can in and out of a metal shelf for months and the coating still looks fresh. The 30 cal size holds approximately 1,000 rounds of 9mm, making it perfect for organizing my handgun ammunition by caliber.

Solid Tactical is a small business based in Atlanta, Georgia, and their 100% satisfaction guarantee gives me confidence in the product. The 87% five-star rating across over 4,500 reviews tells me my positive experience is not an outlier.

Who Should Buy This

Anyone who needs lockable ammunition storage without modifying a standard can should choose the Solid Tactical. The welded lock kit saves you the hassle and risk of DIY welding. It is also ideal for those who want guaranteed seal quality through individual testing rather than batch testing.

Note that the lock itself is not included, so you will need to purchase a padlock separately. This is a minor inconvenience considering the welded lock loops are already in place. Also be aware that minor cosmetic imperfections like small scratches are considered normal by the manufacturer.

Security Features and Practical Use

The welded lock kit accepts standard padlocks and provides genuine security rather than the deterrence-level protection of clip-on lock tabs. I use mine with a combination lock so I do not have to worry about losing keys. The lock loops are positioned so they do not interfere with stacking when unlocked.

The 3.68 by 11 by 7.25 inch dimensions make this a compact option that fits well in locking display cabinets, vehicle consoles, and smaller storage spaces. For anyone building a secure storage system on a shelf or in a cabinet, this can is the right tool for the job.

8. Reapr Steel Ammo Can by Black Sierra – Best Premium Build

The Reapr Steel Ammo Can from Black Sierra Equipment is the most overbuilt ammo can I have ever used, and I mean that as a compliment. At 8.8 pounds empty, this thing is built like a small safe. The metal thickness is noticeably greater than every other can in this roundup, and the seamless bottom corners eliminate a common failure point where cheaper cans develop leaks.

Opening this can for the first time, I heard an audible WHOOSH as air rushed in. That sound tells you everything you need to know about the seal quality. The pliable rubber gasket is larger than standard ammo can gaskets and adheres cleanly to the lid surface. The hinge-clamping handle applies even pressure across the entire seal when closed.

The paint finish on my Reapr can is flawless. No drips, no thin spots, no chips after months of handling. Black Sierra clearly invested in proper powder coating equipment. The built-in feet on the bottom protect the lid of the can below it when stacked, a small but thoughtful detail that shows this product was designed by people who actually use ammo cans.

I tested the stacking claim by loading three of these with heavy ammunition and placing my full body weight on top. They did not buckle or flex at all. Users report these cans support over 220 pounds stacked without deformation. The 92% five-star rating is the highest in this roundup, reflecting the premium build quality.

Who Should Buy This

Shooters who want the absolute best-built ammo can available and are willing to pay a premium for it will find the Reapr worth every penny. This is the can you buy when you want something that will outlast you. Perfect for long-term defensive ammunition storage, prepper supplies, or any scenario where failure is not an option.

Those on a budget will get 90% of the functionality from the Fortress or HARDROCK at a lower cost. The Reapr commands a premium for that last 10% of build refinement. If you only need a few cans for casual storage, the price difference is hard to justify.

Build Quality Details That Matter

What separates the Reapr from cheaper metal cans is the attention to detail in construction. The bottom corners are seamless, eliminating the welded joints that can fail over time. Spot welds are precise and clean. The hinge pin is substantial and shows no sign of loosening after repeated use. The carrying handle is solid metal, not a hollow tube.

The interior measures 14 by 5 by 8.5 inches, providing generous storage space. A single egg-crate foam insert comes included at the bottom, which works well for preventing ammunition boxes from sliding around. The 15.5 by 9.25 by 5.5 inch exterior dimensions make it a larger can that works best for stationary storage rather than frequent transport.

How to Choose the Right Ammo Storage Can

Picking the right ammo can comes down to understanding your storage environment, how long you plan to store ammunition, and what you need to protect against. After years of testing these products, here are the factors that actually matter when making your decision.

Metal vs Plastic Ammo Cans

This is the most common question I get asked, and the answer depends on your situation. Metal cans provide superior durability, better sealing with rubber gaskets, and genuine long-term protection. They are heavier and can rust if not maintained, but they will last decades. Reddit users consistently recommend metal military surplus as the gold standard for a reason.

Plastic cans are lighter, never rust, and cost less. Modern options from MTM and Sheffield with O-ring seals approach the seal quality of metal cans. For range transport and short-term storage, plastic works great. For ammunition you plan to store for more than a year, especially in humid environments, metal with a rubber gasket is the safer choice.

Understanding Ammo Can Sizes

Ammo cans come in several standard sizes, and choosing the right one depends on your ammunition type. The 30 caliber size works well for handgun ammunition like 9mm and .45 ACP, holding roughly 400 to 1,000 rounds depending on packaging. The 50 caliber size is the most versatile, handling rifle ammunition from 5.56 to .308 comfortably, typically holding 500 to 1,000 rounds.

For bulk storage of shotgun shells or large quantities of rifle ammunition, the ammo crate style boxes like the MTM ACR4-18 provide the capacity you need. The 20mm and 40mm surplus cans offer even more space but are harder to find and more expensive to ship due to their weight.

Seal Quality and Waterproofing

The seal is the single most important feature of an ammo can. Look for rubber gaskets or O-ring seals rather than simple tongue-and-groove connections. Test your seal by placing a dry paper towel inside and submerging the closed can in water. If the towel comes out dry after 30 minutes, your seal is good.

For cans that will be stored in basements, garages, or outdoor buildings, waterproof seals are essential. Temperature changes cause condensation inside sealed containers, so even waterproof cans benefit from desiccant packs to absorb internal moisture. Replace desiccant packs every 6 to 12 months for best results.

Military Surplus Condition Grades

If you shop for surplus ammo cans, you will encounter Grade 1 and Grade 2 condition ratings. Grade 1 cans are in the best condition with intact gaskets, minimal exterior wear, and fully functional latches. Grade 2 cans have more cosmetic wear, may have minor dents, and the gaskets might need replacement.

For most shooters, Grade 1 surplus is the sweet spot if you can find it. The rubber gaskets on surplus cans tend to be higher quality than many new production cans, and the steel is often thicker. Always inspect the gasket before purchasing surplus, as a cracked or dried-out gasket defeats the purpose of a sealed can.

Moisture Control Best Practices

Even the best-sealed ammo can will trap existing moisture inside. Start by storing only dry ammunition in dry containers. Add silica gel desiccant packs to each can. For large collections, consider using a humidity indicator card so you can monitor moisture levels without opening the can. Store cans off concrete floors and away from exterior walls where temperature differentials cause condensation.

In high-humidity climates, I recommend checking your desiccant packs every 3 months. Rechargeable silica gel packs that change color when saturated are worth the small additional cost because they tell you at a glance when replacement is needed.

Frequently Asked Questions About Ammo Storage Cans

Final Thoughts on the Best Ammo Storage Cans

After testing all 8 of these cans over several months, my top recommendation for most shooters is the Sheffield 12626 for its unbeatable value and reliable gasket seal. If you want the best overall build quality and seal performance, the MTM AC50C in plastic or the Reapr Steel Can in metal are the cans I trust with my own ammunition.

The best ammo storage cans in 2026 share common traits: proper rubber gaskets or O-ring seals, sturdy latch mechanisms, and construction quality that holds up to real-world use. Whether you choose metal or plastic, invest in good seals, add desiccant packs, and store your cans in a cool, dry place. Your ammunition is an investment worth protecting.