MTM ACC308 Ammo Can Combo 400 Round – Rugged 308 Win Storage Kit

Description

Loose ammunition in a surplus steel can rattles, corrodes and comes out of the range bag as a jumble. The MTM ACC308 Ammo Can Combo 400 Round fixes that by shipping the can and the boxes together, sized so the boxes actually fill the can without shifting.

• Why the Can and the Boxes Ship Together
• MTM ACC308 Ammo Can Combo 400 Round Specifications
• Honest Notes on Ammo Storage

Why the Can and the Boxes Ship Together

MTM builds these in Dayton, Ohio, out of polypropylene rather than steel. The practical consequences are worth listing: it will not rust, it weighs meaningfully less than a 50 caliber military surplus can, and it does not sweat condensation onto the brass inside when you bring it in from a cold truck. For anyone storing ammunition in a garage or a basement, that last point matters more than it sounds.

The seal is a tongue-and-groove O-ring rather than a flat gasket, which is the same approach used on dry boxes for boating. It is water resistant rather than submersible, so it will shrug off rain, a wet range day and humidity, but it is not a dive case. Dual latches keep the pressure even across the lid and make the seal actually work instead of just being present.

What makes the MTM ACC308 Ammo Can Combo 400 Round a combo rather than just a can is the four RM-100 boxes packed inside it. They are sized so the can holds them squarely with no wasted space and no rattle, which is exactly the fit you never quite achieve buying a can and boxes separately.

MTM ACC308 Ammo Can Combo 400 Round Specifications

The MTM ACC308 Ammo Can Combo 400 Round set breaks down simply. Each RM-100 holds 100 rounds, so the set carries 400. The boxes take 308 Winchester and 7.62×51 NATO, and a long list of cartridges that share the same case head and overall length: 243, 22-250, 7mm-08, 6.5 Creedmoor, 25-06 class rounds, 338 Federal, 220 Swift, 250 and 300 Savage, and even 410 shotshells. The governing spec is a maximum cartridge overall length of 3.05 inches, so measure a loaded round if you are unsure.

Can dimensions are 7.3 by 12.5 by 7.3 inches inside, 9.3 by 15.3 inches outside. Molded-in stacking ridges mean several stack squarely rather than sliding, and double padlock tabs let you secure it, which is worth knowing if you store ammunition where children have access.

The colour on this configuration is Dark Earth for the can with tactical black boxes, which is cosmetic but does make the MTM ACC308 Ammo Can Combo 400 Round easy to distinguish from a shelf of green 50 caliber cans.

• Product: MTM ACC308 Ammo Can Combo
• Contents: 1 AC11 ammo can, 4 RM-100 ammo boxes
• Capacity: 400 rounds
• Cartridges: 308 Win, 7.62×51 NATO and similar, maximum overall length 3.05 inches
• Can colour: Dark Earth
• Box colour: tactical black
• Material: polypropylene
• Seal: tongue and groove O-ring, water resistant
• Latches: heavy duty dual latching
• Security: double padlock tabs
• Can inside dimensions: 7.3 x 12.5 x 7.3 inches
• Manufacturer part number: ACC308
• UPC: 026057362410

Honest Notes on Ammo Storage

Buy the MTM ACC308 Ammo Can Combo 400 Round if you shoot 308 or 6.5 Creedmoor in volume and want the ammunition organized rather than loose. Buying the can and boxes as a set is cheaper than assembling the same thing piece by piece.

Skip the MTM ACC308 Ammo Can Combo 400 Round if your cartridges exceed 3.05 inches overall. 3.05 inches overall. Magnum rounds, 30-06 with long bullets and anything belted will not fit the RM-100 boxes, and MTM makes different boxes sized for those.

One honest limitation: water resistant is not waterproof. If you are caching ammunition outdoors or storing it somewhere that genuinely floods, add desiccant and do not rely on the O-ring alone.

Need more capacity? The MTM 4-Can Ammo Crate and the MTM 3-Can 50 Cal Ammo Crate scale the same system up. Individual 100-round 308 flip-top boxes are available separately. MTM lists full ACC308 specifications on its own site.

MAG5 Firearms stocks MTM storage across the range, from single flip-top boxes to full crates. Tell us your cartridge and round count and we can size it for you.