Designed to fit your AR-15/M16, this ProMag® Replacement Magazine will provide guaranteed reliability and smooth-feeding action for your favorite firearm. Durable DuPont® Zytel^TM polymer construction with 42-round capacity.

• For use with AR-15 and M16 rifles
• .223 Remington / 5.56x45mm
• Rugged DuPont® Zytel^TM polymer construction
• 42-round capacity
• Heat-treated chrome-silicon springs