MTM Case-Gard J20M29 J-20 Slip Top Multi-Caliber Rifle Clear Red Polypropylene 20rd
- Capacity-Rounds:
- 20
- Type:
- Ammo Box
- Finish-Color:
- Red
- Model:
- Slip-Top Ammo Box
- Size:
- 250/300/303
- Material:
- Polypropylene
- Dimensions:
- 2.52" OAL
- Hardware:
- None
The MTM Case-Gard J-20 rifle ammo box is a straightforward, durable solution for hunters and shooters who need reliable ammunition storage that won't slow them down. Built from tough polypropylene, this slip-top design holds 20 rounds and fits easily into a hunting shirt or jacket pocket—meaning your reloads, specialty loads, or backup ammunition stay organized and protected without adding bulk. Whether you're heading to the range, the field, or stashing different loads in your pack, the J-20 keeps rounds safe from weather and handling damage.
The polypropylene construction is genuinely tough: it won't warp, crack, chip, or peel under field conditions or temperature swings, so the box stays functional season after season. The clear-red design lets you see what's inside at a glance while keeping everything visible in your gear. The slip-top lid is quick to open and close, making it practical for active shooting rather than something you wrestle with when you need ammo fast.
Rifle shooters everywhere rely on MTM Case-Gard boxes for the same reason—they work without fuss. If you load your own ammunition or keep specialty rounds separate, or simply want a pocket-sized way to organize and transport 20 rounds safely, this is the box that won't let you down.
Key Features
- 20-round capacity designed for rifle cartridges
- Slip-top lid for quick, easy access
- Durable polypropylene construction resists warping, cracking, chipping, and peeling
- Compact, pocket-sized footprint for hunting and field use
- Clear-red design allows visual inventory of contents
- Ideal for keeping specialty loads or reloads organized and separate
Specifications
| Brand | MTM Case-Gard |
| Model | J-20 (J20M29) |
| Capacity | 20 rounds (rifle) |
| Caliber | Multi-caliber |
| Material | Polypropylene |
| Closure Type | Slip top |
| Color | Clear red |
Frequently Asked Questions
What size ammunition does the J-20 hold?
The J-20 is designed for rifle cartridges and holds 20 rounds. It's marketed as a multi-caliber box, making it versatile for different rifle loads.
Will this ammo box survive rough field conditions?
Yes. The polypropylene construction won't warp, crack, chip, peel, expand, or contract, so it holds up well through hunting season and regular use.
Is the J-20 easy to carry while hunting?
Absolutely. It's compact and designed to fit into a hunting shirt or jacket pocket, so you can carry a backup load or specialty rounds without adding significant weight or bulk.
What's the difference between this slip-top design and other MTM ammo boxes?
The J-20 uses a slip-top lid for quick access, making it practical for situations where you need to grab ammo fast. The clear-red body lets you see exactly what's inside without opening the box.
Ammunition Restrictions:
You must be 18 years or older to purchase shotgun or rifle ammunition, and 21 years or older for handgun ammunition. All ammunition must be shipped via Domestic Ground, and shipping is not available for international residents. Residents of CA, DC, IL, MA, NY, CT, and NJ may be subject to additional restrictions. Always ensure you use the appropriate ammunition for your firearms, and check your state and local laws for any other relevant regulations on firearms and ammunition. Due to Department of Transportation regulations, returns on ammo cannot be accepted. Please verify local laws before placing an order.
We are unable to ship ammunition to the following:
- Hawaii
- Alaska
- P.O. Boxes
- APO/FPO Addresses
- International Addresses
- U.S. Territories
- U.S. addresses with zip codes starting with (100, 101, 102)
Illinois residents must provide a copy of a valid FOID Card or Valid Concealed Carry License, along with their IL driver’s license or IL state identification card to purchase ammunition. The ammunition can only be shipped to an address listed on either of those two documents.
Email: [email protected]

