This is a ProMag® Polymer 20-round magazine for Ruger® Mini-30 rifles in 7.62mm.
Lightweight, compact, and packing plenty of firepower, these 20-round magazines are built from injection-molded, impact-resistant Zytel™ polymer with heat-treated chrome silicon anti-fatigue springs for maximum reliability in the most extreme conditions. Robust, reliable, and lightweight, Ruger’s Mini-30 ranch rifle combines ultimate flexibility with the impressive stopping power of the AK-47’s 7.62mm cartridge. It’s available in a number of different configurations and is ideal for various shooting applications. These improved ProMag magazines are designed to keep your ranch rifle running smoothly in any environment. Perfect for tucking away in a pocket or range bag, these 20-round ProMag magazines are designed to meet Ruger’s factory standards for optimum fit and function in Mini-30 rifles. And they come with ProMag’s lifetime guarantee—giving you a free replacement if anything ever happens.