The ProMag AR-15 9mm 50rd Drum in Black is an innovative and high-capacity magazine designed for AR-15 rifles chambered in 9mm. With an impressive 50-round capacity, this black drum magazine ensures you can enjoy extended shooting sessions without frequent reloading. Crafted for reliability and ease of use, it's an essential accessory for your AR-15 9mm conversion, providing ample rounds for your shooting needs.