Make the most of your 6.8mm chambered AR with long-wearing, extra-tough steel magazines. Hardened steel bodies with tempered feed lips hold their shape and won't flex, bend, or deform. Tempered steel springs help maintain reliable feeding and function even with the heavier 6.8mm cartridge. Lightweight, Magpul brand, nylon composite followers are marked 6.8 to avoid confusion with AR magazines for other calibers. These magazines also work with the .224 Valkyrie and .22 Nosler Cartrdiges. Available in 10-, 15-, or 25-round capacity. Mfg: Precision Reflex SPECS: Steel, blue. Fits. AR-15/M16 rifles chambered for 6.8 x 43mm Rem. SPC., .22 Nosler, and .224 Valkyrie