MTM CASE-GARD RM-100 rifle ammunition cases are still the first choice of rifle enthusiasts throughout the world. Made of virtually indestructible polypropylene that will not warp, crack, chip, peel, expand or contract. This box also features a mechanical hinge which is guaranteed for 1 million open-close cycles or 25 years. Snap-Lock latch protects contents from accidental spilling. Each CASE-GARD 100 ammo box is supplied with a load label for recording load data.