ASC Stainless Steel magazines are an improvement on a classic, with the highest levels of durability and increased longevity, simply the best in the industry! Our magazines are manufactured 100% start to finish in the USA using .020â€ gauge 410 Stainless Steel Alloy and heat treated for superior strength and lasting endurance. Our magazines are chemically treated for corrosion resistance [ref. AMS QQ-P-35]. The interior dimensions of OAL 2.316â€ Â± .002 are perfect for reloads.