The 2SKB-5014 ATA Quad Rife Case is made to ATA 300 Category I specifications - the highest shipping container specification of the ATA. This case is molded from ultra-high density molecular weight polyethylene (the material specified by the U.S. military for cases and containers) and was designed to carry four rifles with SKB's trademarked "bunk-bed" padding and divider protection system. The 2SKB-5014 features SKB's unique Perfect Match Valance Bending System for a perfect seal. This case is weather resistant, stackable, and features bumper protected hardware and solid die case zinc locks, built-in Polymer wheels, and both carry and tow handles for easy transport..