This is a Stainless Steel 20-round magazine for AR-15 rifles in 7.62x39.
ASC’s stainless steel magazines are undeniably the first fully reliable 7.62x39mm AR magazines on the market—helping combine 2 of the most successful rifles on the planet, the AK-47 and the AR-15/M-16. Made 100% start to finish in the U.S.A. from 410 Stainless Steel alloy, these magazines are a must-have for all 7.62mm AR-15 owners.
Lightweight and easy to handle, these 20-round stainless steel magazines are heat treated to enhance durability, then chemically-treated to improve corrosion resistance (ref QQ-P-35). Finished with ultra-reliable internals like chrome silicon springs, these magazines are ready for practically anything you can throw at them.
Internal dimensions are optimized for handling all kinds of ammunition (including reloads).