ASC Stainless Steel .308 magazines are engineered with the highest levels of quality and constructed with the most durable materials, simply the best in the industry! Our magazines are manufactured 100% start to finish in the USA using .032 gauge 410 Stainless Steel Alloy and heat treated for superior strength and lasting endurance. The magazine is chemically treated for corrosion resistance [ref QQ-P-35] integrated with our proprietary coating, a high grade Marlube which is a wear-in not wear-off coating that burnishes in the surface providing self-lubricating properties. The interior dimensions of OAL 2.865" A .002 are perfect for reloads.