MTM originated the 100 round flip-top handgun ammo boxes over 30 years ago. The Case-Gard P-100's are the perfect ammo carrier for the handgunner who wants to spend several hours at the range. Ideal for storing reloads. They have an easy to grip, scuff-resistant textured surface and are stackable. The Snap-Lok latch and full length mechanical hinge are guaranteed for 25 years. Calibers for each box our listed on the bottom of each box. Load label included. All MTMCase-Gard's are MADE IN USA in our factory in Dayton Ohio.P-100-3 38 Spec., 357 Mag., 38 Auto Colt, 32 H&R Mag., 32 WCF, 30 Mauser, 327 Fed. Mag., 35 Win. S.L., 38 S&W, 38 Super Colt, 5.7x28 FN, 7.62x25 Tokarev, 30 Mauser, 9x23mm Win. Rifle:17 Win. Super Mag., 22 Rem. Jet Max. OAL = 1.70" Photo shown contains two boxes highlighting the mechanical hinge.