MTM J-20- Rifle Slip-Top 20 Round Ammo Case

• MTM CASE-GARD J-20 series ammunition cases are a favorite of rifle enthusiasts throughout the world.
• Made of virtually indestructible polypropylene that will not warp, crack, chip, peel, expand or contract.
• The CASE-GARD J-20’s are available in five sizes.
  
  

J-20-XS:

• 17 / 221 / 223 Rem., 17 Fireball, 17 Mach 4, 204 Ruger, 218 Bee, 222 Rem. Mag., 300 AAC Blackout, 300 Sherwood, 300 Whisper, 32 Ideal, 32 Win. S. L., 350 Legend, 351 WSL, 6x47, 7.62 x 37 Musang, 6mm-223 Rem., 7.62x37 Musang, 810 Cadet.
• Lid is at 2.35" OAL.

J-20-M:

• 219 Zipper, 20 / 22 / 24 Nosler, 22 BR, 22 Cheetah, 22 PPC, 22 Sav. HP, 22 Rem Jet, 220 Rus., 224 Valkyrie, 250 / 300 / 303 Sav., 30 / 35 Rem., 30 Rem. AR, 32-40 / 375 / 38-55 Win., 401 Win. S.L., 445 Super Mag., 450 Bushmaster, 460 S&W Mag., 5.6x52 Rimmed, 6.8mm Rem. Spl., 6mm BR-DX, 6mm Norma BR, 6mm PPC USA, 7.62x39 Rus., 7mm BR.
• Lid is at 2.52" OAL.

J-20-MLD:

• 25 / 270 / 300 / 325 / 338 / 7mm WSM, 30 Rem, 300 / 7mm Rem. SAUM, 300 / 338 RCM, 348 / 356 / 375 / 38-56 / 40-65 Win., 375 Rimless 2 ¼”, 376 Steyr, 38-55 Ballard, 45-70 Govt., 40-82 / 45-90 / 348 WCF, 40-60 / 450 Marlin, 460 / 500 S&W Mag., 30-40 Krag, 400-375 Belted Nitro Exp., 6.5 PRC, 6.71 Phantom, 7.5 Schmidt Rubin Swiss, 7.82 Patriot, 7mm Rem. SAUM / 8x56 Rimmed Hungarian, 8.59 Galaxy, 9.5x47 Rimmed, 10.75x65 Rimmed
• Lid is at 3.08" OAL.

J-20-L:

• 220 Swift, 224 Clark, 225 / 25-284 / 270 / 284 / 307 / 308 / 356 Win., 240 Wby. Mag., 25-06 / 244 / 280 / 6mm / 7mm-08mm Rem., 257 Roberts, 30-06 Spr., 30-30 Win., 30-40 Krag., 308 Marlin Exp., 360 Nitro Express 2 1/4”, 375 Rimless 2 1/4”, 32 Win. Spl., 338 Fed., 35 Whelen, 350 Legend, 376 Steyr, 444 Marlin, 400-375 Belterd Nitro Exp., 6.5 Carcano, 6 / 6.5 Creedmoor, 6.5x257 Roberts, 6.5-284 Lapua, 6.5x50 Jap. Arisaka, 6.5x52 Italian, 6.5x54mm Mann-Schoen, 6.5x55mm Swedish, 6.5-06 A-Square, 6.5-284 Norma, 6mm-284 Win., 7x57 / 7MM PRC / 7.65x53 / 9.3x57mm / 10.75x68 Mauser, 7x64 Brenneke, 7.5x55 Swiss, 7.7x58 Jap., 7-30 Waters, 7.35 Carcano, 7.5 Schmidt Rubin Swiss, 7.5x54 French MAS, 7.5x55 Swiss, 7.7x58 Jap., 7-30 Waters, 8x57J, 8mm-06, 9.3x74, 9.3x62, 9.5x57.
• Lid is at 3.36" OAL.
  

J-20-LLD:

• 26 / 28 / 30 / 33 Nosler, 260 Rem., 6.5-08 A-Square, 257 / 270 / 300 / 338-378 / 340 / 375 / 6.5-300 / 7mm Wby. Mag., 264 / 300 / 330 / 338 / 458 Win. Mag., 300 / 375 H&H Mag., 300 / 338 / 375 / 7mm / Rem. Ultra Mag., 30 Super Flanged, 300 / 330 / 375 / 416 Dakota, 300 PRC, 303 Brit., 308 / 358 Norma Mag., 358 STA, 25-284 / 38-72 / 405 Win., 400 / 400-350 Nitro Exp, 400-360 Thin Rim Purdey, 404 Jeffery, 40-65 Sharps Str., 444 Marlin, 375 Ruger, 6.5-284 Norma, 6.53 Scramjet, 6.5x52 Ital., 6.5x57 Rimmed / 7mm / 7.21 Firebird, 7mm PRC / 7mm Rigby, 7x61 S&H, 416 / 6.5 / 8mm Rem. Mag., 416 Taylor, 458 Lott, 6.17 Spitfire, 7mm STW, 7.5x 54 Swiss, 7.62x54R, 8x64 Brenneke, 8x65 Rimmed, 8x68S Mag., 9.3x62, 9.3x82 Rimmed, 9.5x57, 10.75x68 Mauser.
• Lid is at 3.84" OAL.

MTM CASE-GARD J-20 series ammunition cases represent the gold standard for rifle ammunition storage among serious shooters and reloaders worldwide. Engineered from premium polypropylene, these cases deliver exceptional durability—resisting warping, cracking, chipping, peeling, and dimensional changes across temperature fluctuations and storage conditions. The J-20 lineup offers five distinct capacity options to accommodate various cartridge specifications, with all rounds stored in the bullet-up position for optimal organization and accessibility. The design accommodates reloaders who prefer clearance between loaded rounds and the case lid, with generous interior dimensions that allow for expansion without compromising accuracy. Many experienced reloaders report expanding cases by up to half an inch with no measurable impact on ballistic performance. Whether you're managing factory ammunition, handloads, or a mixed inventory, the J-20 series provides reliable, long-term protection for your ammunition investment. The robust construction ensures your rounds remain secure and organized through years of range use andstorage .