The Rock Island OEMP164015B 1911 16rd 40 S&W 10mm Blued Metal magazine, crafted by Armscor, is a premium choice for firearm enthusiasts seeking reliability and performance. Designed specifically for the Rock Island Ultra Full Size High Capacity pistol, this ACT-MAG model offers a substantial 16-round capacity, accommodating both 40 S&W and 10mm calibers, making it a versatile addition to your shooting gear. The blued metal finish not only enhances the magazine's durability but also provides a sleek, professional appearance that complements the aesthetics of your firearm. Engineered for precision and smooth operation, this magazine ensures seamless feeding and optimal performance, whether you're at the range or in a competitive shooting environment. The Rock Island 1911 magazine is an essential accessory for those who demand high capacity and reliability from their pistol magazines. With its robust construction and attention to detail, this Armscor magazine stands out as a top-tier choice for shooters who prioritize quality and functionality. The blue finish magazine is not only visually appealing but also resistant to wear and tear, ensuring longevity and consistent performance. Whether you're using it as a 40 S&W magazine or a 10mm magazine, the Rock Island OEMP164015B delivers exceptional value and dependability. With a UPC of 812285021270 and manufacturer part number OEMP164015B, this magazine is a must-have for any serious firearm collector or enthusiast looking to enhance their shooting experience with a reliable and high-capacity option.