Durable polypropylene ammunition storage for large rifle cartridges. 20-round capacity with bullet-up positioning, clear green construction resists warping, cracking, and expansion.
The MTM Case-Gard J-20 is a purpose-built ammunition storage solution trusted by rifle shooters and reloaders worldwide. This box represents the practical intersection of durability and functionality that serious shooters demand.
Manufactured from virtually indestructible polypropylene, the J-20 resists warping, cracking, chipping, peeling, expansion, and contraction—even under demanding storage conditions. This material stability is particularly important for reloaders who may store ammunition for extended periods.
The J-20 accommodates a comprehensive range of large rifle cartridges, including:
Many reloaders expand cases during the reloading process. The J-20's generous internal dimensions accommodate expanded cases without compromising accuracy or fit.
A reliable, no-nonsense ammunition box built for shooters who understand that proper storage protects both safety and investment.