DealThe SureFire high-capacity magazine for 5.56x45 mm (.223 Remington) ammunition, is compatible with M4/M16/AR-15 variants and other firearms that accept standard STANAG 4179 magazines. Constructed from Mil-Spec hard-anodized aluminum, they feed smoothly and reliably due to optimal geometry, non-binding coil springs, and ingenious nesting polymer followers. from Palmetto State Armory (Product MAG5-60) |