The MTM Case-Gard J-20 Series Slip-Top Rifle Ammunition Box (J-20-L-29) is a lightweight, two-piece polymer container designed to organise and protect 20 rounds of rifle ammunition. Built from transparent heavy-duty polypropylene in Clear Red, it allows quick visual verification of cartridge contents and primer conditions without opening the case. The friction-fit slip-over lid operates smoothly without mechanical latches or hinges, delivering a snag-free, pocket-friendly profile for hunters in the field and handloaders at the range.

Key Features

• Friction Slip-Top Design: Two-piece construction allows smooth opening and enables the lid to telescope outward to accommodate varied bullet seating depths.
• Compact Field Profile: Sized for snag-free carry inside hunting jacket pockets, daypacks, or range bags, weighing approximately 0.20 lb (~90 g).
• Visual Load Verification: Clear Red tinted polypropylene provides immediate visual inventory of remaining rounds and bullet profiles.
• Durable Polypropylene Build: Resists warping, chipping, and cracking under variable outdoor hunting and shooting conditions.

Specifications

• Capacity: 20 rounds (stored bullet-up)
• Maximum Cartridge Overall Length (OAL): 3.36 in (85.34 mm) with lid fully seated flush
• Lid Extension Allowance: Telescopes outward up to 0.50 in (12.7 mm) to fit longer custom handloads
• Outer Length: Approximately 6.10–6.20 in (~155–157 mm)
• Weight: Approximately 0.20 lb (~90 g)
• Material: Polypropylene
• Colour: Clear Red
• Calibre Compatibility: .30-06 Springfield, .270 Winchester, .25-06 Remington, .280 Remington, .220 Swift, 7x57mm Mauser, 6.5x55mm Swedish, 6.5 Creedmoor, .30-30 Winchester, and similar standard-length rifle rounds

Who is the MTM Slip-Top Rifle Ammo Box - 20 Round 30-06 30-30 270 Win Clear Red for?

• Stalk hunters — Carrying a dedicated day supply of ammunition in field pockets with a slip-top ammo box that weighs only 0.20 lb (~90 g) and holds a compact 20 rounds.
• Handloaders — Isolating experimental seating depths and test charges up to 3.36 in (85.34 mm) OAL, with the slip-lid telescoping an extra 0.50 in (12.7 mm) to protect extended projectile profiles.
• Benchrest shooters — Organizing and segregating 20 rounds of match ammunition in a dedicated, transparent case for rapid visual verification during competition stages.

Less suitable for: Handloaders firing magnum cartridges that exceed the 3.36 in (85.34 mm) flush overall length limit (such as .300 Win Mag or .375 H&H, which require longer magnum-specific ammo boxes), high-volume shooters needing capacities over 20 rounds (who are better served by 50- or 100-round flip-top cases), or wet marine environments requiring submersible, O-ring sealed dry storage boxes.