When selecting a plastic ammo box for .30 caliber rounds, durability, moisture resistance, and secure lids matter most. This guide highlights top-rated plastic ammo boxes designed to keep ammunition organized, dry, and ready for transport. Each option combines rugged construction with practical features like sealable lids, locking points, and stackable designs to maximize storage efficiency.
| Product | Brand | Key Features |
|---|---|---|
| Plano Field Ammo Box .30 Caliber | Plano | Lockable lid, heavy-duty carry handle, water-resistant protection, holds 6-8 boxes |
| MTM AC4C 4-Can Ammo Crate | MTM | Durable, lightweight, stackable, four tie-down spots, water-resistant seal |
| MTM AC30C-11 Ammo Can Short | MTM | Rugged polypropylene, dual latching system, O-ring water seal, compact dimensions |
| MTM AC30T-11 Tall Ammo Can | MTM | Water-resistant O-ring seal, double padlock tabbed, stacking ridges, holds up to 15 lb |
| MTM AC30T-72 Ammo Can Tall | MTM | Holds up to 15 lb, heavy-duty latching, water resistant, rugged polypropylene |
Note: All selections focus on plastic ammo cans designed to safely store .30 caliber ammo, with emphasis on moisture protection, secure closures, and convenient portability.
Plano Field Ammo Box .30 Caliber

PLANO FIELD AMMO BOX: Ideal for properly storing and organizing .30 caliber ammo, this plastic ammo storage box keeps ammunition safe during transport and protected from the elements. Holds 6-8 boxes. DURABLE CONSTRUCTION: These ammunition boxes are made from heavy-duty materials that provide reliable protection on the go or at home. Reusable storage that stands the test of time. LOCKABLE WITH VERSATILE USE: Tough, snap-down latch secures the lid shut and the padlock tab provides maximum security. Perfect for storing ammo, hunting or shooting gear, small tools and other accessories.
MTM AC4C 4-Can Ammo Crate

DURABLE: The MTM AC4C is a durable and reliable multi-caliber ammunition crate that is designed to store and transport your ammunition securely. LIGHTWEIGHT & STACKABLE: This ammo crate features a reinforced polymer construction that is both lightweight and impact-resistant. This item is stackable and easy to secure with four tie down spots for ATV attachment. WATER-RESISTANT: It includes a water-resistant O-ring seal that helps keep out moisture and dust, ensuring your ammunition stays dry and protected.
MTM AC30C-11 Ammo Can Short

Outside dimensions: 7.4″ (L) x 13.5″ (W) x 5.1″ (H). Made of rugged polypropylene plastic; Comfortable handles. Heavy-duty, dual latching system for a super water-resistant seal. Designed to store 30-caliber ammunition securely with easy access.
MTM AC30T-11 Tall Ammo Can

Water-resistant O-ring seal; Double padlock tabbed; Molded-in stacking ridges; Heavy-duty, latching systems, Great way to store bulk or boxed ammo; Excellent choice for basements, garages and sheds, Designed to hold up to 15 pounds of ammo or gear.
MTM AC30T-72 Ammo Can Tall

Holds up to 15 pounds of ammo or gear. Water-resistant O-ring seal; Double padlock tabbed; Molded-in stacking ridges; Heavy-duty latching system; Rugged polypropylene; Great for bulk storage in basements, garages, and sheds.
Buying Guide
- Seal integrity: A true O-ring seal or gasket helps protect contents from moisture, dust, and humidity. Look for models with reliable weather sealing to prevent corrosion and deterioration of ammunition.
- Locking and security: If security is important, choose boxes with a robust latch system and a padlock tab or reinforced hasps to deter tampering.
- Durability and material: Polypropylene and other reinforced polymers offer impact resistance and lighter weight without sacrificing strength. Heavy-duty construction extends service life in transport and storage.
- Size and capacity: Consider interior dimensions and weight limits. Tall and short variants cater to different packing needs, from compact transport to bulk storage.
- Stackability and transport: Stacked storage saves space in garages or gun safes. Look for stacking ridges and tie-down points to secure crates during transport.
- Ventilation and moisture management: While most containers are sealed, ensure lids fit tightly and consider containers with removable trays or dividers if you organize varied ammo types.
- Versatility: Some boxes accommodate multiple calibers or tools beyond ammo. If you need flexibility, select crates that can double as tool or gear storage.
- Maintenance and cleaning: Plastic cans should be easy to wipe clean; check for smooth interiors to prevent residue buildup and corrosion.
- USA-made and warranties: For some buyers, locally manufactured products with warranties provide extra assurance on quality and support.