Frankford Arsenal, Hinge-Top Ammo Box, 515, 50 Rounds, Fits 270WSM, 7MM Saum and 300WSM, Smoke Gray, Plastic WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov. High density polymer construction for maximum durability Hinge-top design prevents lid from inadvertently closing Smoke Gray 50 Round capacity The Frankford Arsenal Hinge-Top Ammo Box is made with a high-density polymer material offering unmatched protection for your ammo. Give your ammunition the protection it deserves. Compatible with the following ammo calibers: 270 WSM, 7mm SAUM, 7mm WSM, 300 WSM