This is an AR-15 30-round magazine in 5.56mm/.223 Rem from SGM Tactical®.
These STANAG-compliant, full-capacity magazines feature reinforced feed lips and a durable cold-reinforced SK-5 steel construction, and a low-gloss black finish—making them ideal for use in tough situations or unpredictable weather. SGM Tactical provides reliable aftermarket alternatives at prices that are tough to beat. Combining impressive craftsmanship with improved function and SGM Tactical’s five-year warranty, these aftermarket magazines are a perfect upgrade for your kit.