This is a ProMag® BLACK Polymer 42-round magazine for Ruger® Mini-14 rifles in .223/5.56mm.
These lightweight extended magazines feature anti-fatigue chrome silicon internal springs for maximum long-term reliability, and injection-molded, glass-filled polymer bodies and followers for the ultimate in durable performance. The Ruger Mini-14 is one of America’s most iconic, affordable, and popular ranch rifles. Built around an M1 Garand-inspired action and available in a variety of configurations, the Mini-14 is a practical choice for a wide variety of shooting applications—and these ProMag extended magazines will keep it running smoothly. Like most extended magazines, these ProMag magazines may require a “break-in” period before they can be loaded & unloaded with ease, but their anti-fatigue springs allow them to be stored loaded for extended periods of time without harming service life or reliability. These extended magazines come with ProMag’s lifetime guarantee—so if anything ever happens with your purchase, you’ll receive a FREE replacement in the mail.