224 Valkyrie | 6.8 SPC Magazine 5 Rounds- These ASC 6.8 SPC mags fit 224 Valkyrie because the 224V is made from the same 6.8 cartridge brass. Stainless Steel magazines, engineered with the highest levels of quality for increased longevity, simply the best in the industry! Our magazines are manufactured 100% start to finish in the USA using .020 gauge 410 Stainless Steel Alloy, heat treated for superior strength and lasting endurance. Our magazines are chemically treated for corrosion resistance [ref QQ-P-35] and coated with our proprietary finish, Marlube which is a wear-in not wear-off coating that burnishes into the surface providing self-lubricating properties. The interior dimensions of OAL 2.316” ± .002 are perfect for reloads.- Compatibility... These mags fit and function in Mil Spec AR-15 firearms.