Ammo cans (often called ammo boxes or ammo storage boxes) are containers specifically designed for storing and transporting ammunition. Military surplus ammo cans are usually steel, featuring a rubber gasket around the lid to keep contents dry and safe from the elements. While their primary job is to store ammo, these versatile containers have countless uses—from toolboxes to geocaching kits. Keep reading to learn about different types of ammo cans, how to care for them, and how to pick the perfect model for your needs.
Why Use Military Surplus Ammo Cans?
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Durability
- Built to military specifications, steel ammo cans can handle rough conditions. Whether you’re a range shooter, camper, or survival enthusiast, the sturdy metal walls and rubber gasket keep contents secure.
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Waterproof & Airtight
- The rubber gasket around the lid forms a tight seal, creating waterproof and airtight storage. This helps protect ammunition, tools, first-aid supplies, or any other sensitive gear from moisture or dust.
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Longevity
- With a quick paint touch-up or rust-preventing spray, a military surplus ammo can can last for decades.
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Locking Mechanisms
- Many ammo cans can be fitted with padlocks, making locking ammo cans great for securing important items away from curious hands.
Common Types of Ammo Cans
Below is a quick overview of popular ammo can sizes, including 20mm, 40mm, 50 cal, and 30 cal ammo cans. Each type serves a unique purpose based on capacity, dimensions, and handling. (And your preferences!)
20mm Ammo Can
- Key Features: A large can that holds up to 1500 rounds of 7.62 or 5.56/2.23 ammo.
- Size & Weight: Roughly 43cm x 35.5cm x 19cm; weighs around 6kg.
- Pros: Great for bulk storage or oversized tools.
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Cons: Bulkier and heavier to move.
40mm Ammo Can
- Key Features: Originally built for 40mm shells (around 32 rounds). The lid completely detaches, making it easy to load bigger items.
- Size & Weight: About 45.5cm x 15cm x 25cm; weighs 6.5kg.
- Pros: Excellent all-purpose container, ideal for larger or oddly shaped gear.
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Cons: Not hinged, so keep track of the lid.
50 Cal Ammo Can
- Key Features: Possibly the most recognized ammo can. The lid is hinged on one side and latched on the other.
- Size & Weight: Approximately 18.5cm high x 14.4cm wide x 28cm long.
- Ideal For: Medium-to-large ammo loads, tools, electronics, or even camera gear.
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Our Recommendation: Check out our 50 Cal Utility Storage Box, which offers the same rugged design with the convenience of various conditions (Grade 2 to brand-new).
30 Cal Ammo Can
- Key Features: Narrower than the 50 cal, also has a hinged lid. Lighter and more portable.
- Size & Weight: About 26cm x 16cm x 9cm; weighs 1.6kg.
- Ideal For: Smaller-caliber ammo, first-aid kits, or any gear that needs organized, compact storage.
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Our Recommendation:
- 30 Cal Utility Storage Box – Standard option for versatile storage.
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30 Cal Utility Storage Box - Grade 2 – Same functionality at a more budget-friendly price, with some cosmetic wear.
240-Round 30 Cal Ammo Box
- Key Features: A slightly longer 30 cal box, holding up to 240 rounds.
- Size & Weight: Roughly 30cm x 17.5cm x 8cm; weighs 2kg.
- Ideal For: Storing a bit more ammo than the standard 30 cal, with a hinged lid and carry handle.
Repurposing an Ammo Box
Ammunition storage is the obvious purpose for an ammo can, but these sturdy containers can do a lot more:
- Emergency Stove: With a few drilled holes for ventilation, you can turn an ammo can into a mini wood stove.
- Humidor: The airtight seal helps maintain humidity for cigars.
- Toolbox or First Aid Kit: Great for workshop or roadside emergency supplies.
- Geocache Containers: Stash it outdoors without worrying about water damage.
- Motorcycle/Bicycle Saddle Bags: Mount them to hold gear on the go.
- Lockable Strong Box: Fit a padlock bracket for secure storage of valuables or harmful items.
- Quick-Grab Bags: Pair your ammo can with a British Army MTP Ammunition Grab Bag or a British DPM Minimi Ammo Pouch for easy on-the-go access to essential supplies.
Preventing Rust and Maintaining Your Ammo Can
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Check the Seal
- Ensure the rubber gasket is intact. If it’s cracked or loose, replace or repair it to maintain a waterproof seal.
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Repaint When Needed
- Over time, paint can chip and expose metal to moisture. A quick coat of rust-inhibiting paint will preserve the can for years.
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Store Properly
- Keep your ammo storage box in a cool, dry place. If you’re storing ammo long-term, consider adding desiccant packs for extra moisture control.
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Locking Mechanisms
- If you need locking ammo cans, choose one with a latch designed for padlocks or consider adding a custom locking bracket.
Featured Ammo Storage & Carry Products
Looking to expand your storage options or need a quick way to transport ammo on the move? We’ve got you covered:
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30 Cal Utility Storage Box - Shop Now
- Classic build for small-to-medium ammo loads, tools, or first aid supplies.
- Classic build for small-to-medium ammo loads, tools, or first aid supplies.
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30 Cal Utility Storage Box – Grade 2 - Shop Now
- Same great functionality with slight exterior wear; perfect if you want a budget-friendly option.
- Same great functionality with slight exterior wear; perfect if you want a budget-friendly option.
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50 Cal Utility Storage Box - Shop Now
- Ideal if you need a more spacious container for bulk ammo storage. Hinged lid and sturdy latch keep your items secure.
- Ideal if you need a more spacious container for bulk ammo storage. Hinged lid and sturdy latch keep your items secure.
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British Army MTP Ammunition Grab Bag - Shop Now
- Need a quick-grab solution for mags or gear? This bag features multiple pouches for ammo and accessories, using durable MTP (Multi-Terrain Pattern) fabric.
- Need a quick-grab solution for mags or gear? This bag features multiple pouches for ammo and accessories, using durable MTP (Multi-Terrain Pattern) fabric.
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British DPM Minimi Ammo Pouch - Shop Now
- A versatile ammo pouch perfect for carrying belted ammunition or general supplies. Matches British DPM camouflage gear.
- A versatile ammo pouch perfect for carrying belted ammunition or general supplies. Matches British DPM camouflage gear.
By combining military surplus ammo cans with these grab bags or pouches, you can organize your ammo for both long-term storage and quick deployment.
Frequently Asked Questions
Q: Are ammo cans waterproof?
A: Yes, most steel ammo cans feature a rubber gasket that forms a seal, making them both waterproof and airtight when latched properly.
Q: Which is better—metal or plastic ammo cans?
A: Metal (steel) ammo cans are tougher and more secure, while plastic cans are lighter and won’t rust. Many prefer steel for its longevity and durability.
Q: How long does ammo last in a properly sealed ammo can?
A: Ammunition can last for decades if kept in cool, dry conditions. The airtight seal of a quality ammo storage box helps preserve ammo by keeping out moisture.
Q: Can I store other items (besides ammo) in these boxes?
A: Absolutely! They’re perfect for electronics, tools, first-aid supplies, and even keepsakes. Just be mindful if you’re mixing ammo with flammable or sensitive materials.
Q: What’s the difference between a 30 cal and 50 cal ammo can?
A: The main differences are size and capacity. A 30 cal ammo can is narrower and lighter, while a 50 cal ammo can is larger and can hold more ammo or gear. Both are excellent for different uses.
Shop Ammo Cans
Choosing the right ammo can depends on how much ammo or gear you need to store, how often you plan to transport it, and whether you want the option to lock it. With the variety of 30 cal and 50 cal utility storage boxes we carry—plus the convenience of British Army MTP Ammunition Grab Bags and British DPM Minimi Ammo Pouches—you’ll find exactly what you need to keep your ammo safe, organized, and ready for action.
Ready to Upgrade Your Storage?
Check out our full range of military surplus ammo cans and accessories for long-term storage and on-the-go transport. If you have any questions, feel free to reach out—we’re here to help you find the perfect solution!
