MTM Ammo Box 7.62x39 22-250 243Win 20rd Slip

• 20-round capacity: Keeps a practical field or range quantity of ammunition together in one compact box, making it easy to organize loads by caliber or purpose.
• Slip-top design: The simple sliding lid gives fast access to cartridges while keeping the box slim and easy to store in a pack, range bag, or cabinet.
• Polypropylene construction: The rigid plastic body resists warping, cracking, chipping, and moisture-related dimensional changes, so the box stays dependable through regular handling.
• Caliber-specific fit: Designed for cartridges such as 7.62x39, .22-250, and .243 Win, it helps keep rounds upright and separated to reduce clutter and protect loaded ammunition.
• Lightweight USA-made build: At 70.00 g, the box adds very little bulk while still providing a durable storage solution for transport and bench use.

About the J-20 Series

The MTM CASE-GARD J-20 Series is a line of 20-round rifle ammunition boxes built for shooters who want a compact, straightforward way to store and carry centerfire cartridges. Within MTM’s ammunition storage range, the J-20 models sit as slim, caliber-specific boxes that prioritize portability and quick access over high-capacity bulk storage. That makes them well suited to hunting trips, load development at the bench, and keeping a small reserve of ammunition with a rifle.

A defining feature of the series is its slip-top format, which keeps the profile low and uncomplicated. MTM builds these boxes from polypropylene, a material chosen for durability and resistance to cracking, warping, and general wear from repeated use. The series is offered in several internal sizes to match different cartridge families, with rounds stored bullet-up for orderly access and easy visual identification. For shooters who prefer a lightweight, reusable cartridge box rather than loose rounds or oversized cases, the J-20 Series remains a practical part of MTM’s long-established ammo storage lineup.

About the MTM Ammo Box 7.62x39 22-250 243Win 20rd Slip

The MTM Ammo Box 7.62x39 22-250 243Win 20rd Slip is the J-20-M size within the J-20 family, configured for a useful group of short to medium-length rifle cartridges including 7.62x39, .22-250, and .243 Win. Its role is simple but important: it keeps loaded rounds separated, upright, and easier to handle than loose ammunition in a pocket, pouch, or range bag. For hunters, that means cleaner access in the field; for reloaders and range shooters, it means better organization when carrying different loads.

The 20-round layout suits real-world use well. It is enough ammunition for a short range session, sight-in work, or a day in the field, while keeping the box compact enough to fit where a larger case would be inconvenient. The slip-top lid supports quick opening and a flatter overall shape, which is especially useful when packing several boxes together. Because the body is made from polypropylene, the box is built to handle repeated opening, transport, and storage without becoming brittle or misshapen under normal use.

Its 152.00 mm length and 76.00 mm height give it a compact footprint, and the 70.00 g weight keeps added carry weight to a minimum. Made in the USA, this MTM cartridge box is a practical storage accessory for shooters who want a dedicated, reusable case for specific rifle calibers rather than a one-size-fits-all container.

About MTM

MTM Molded Products Company began in 1968 in Dayton, Ohio. The company focuses on products for shooting sports, hunting, and outdoor activities, with a range that includes ammunition boxes, ammo cans, firearm cases, and other shooting accessories. MTM also produces gear for archery, reloading, camping, hiking, fishing, and overlanding, which reflects its long emphasis on practical molded storage and transport products. The business remains family-run and manufactures in Dayton, Ohio, giving the brand a strong association with USA-made polymer equipment for shooters and outdoor users.

Main Features

• Manufacturer: MTM
• Product type: Cartridge box
• Capacity: 20 rounds
• Compatible cartridges: 7.62x39, .22-250, .243 Win
• Material: Polypropylene
• Length: 152.00 mm
• Height: 76.00 mm
• Weight: 70.00 g
• Made in: USA
• Application: Ammunition

Warranty

This MTM ammunition box is covered by a 2-year warranty.