This is a Ruger Mini-14 .223 Remington 20-round magazine, manufactured by Promag.

Quick Features:

• Rugged, blued steel construction
• Heat-treated chrome silicon wire spring
• Manufactured & Assembled in the U.S.A.
• Chambered in .223 Remington / 5.56 NATO

ProMag magazines are made in the USA and backed by a lifetime guarantee against manufacturer’s defects.