The SureFire high-capacity magazine for 5.56x45mm (.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, this magazine feeds smoothly and reliably thanks to optimal geometry, non-binding coil springs, and ingenious nesting polymer followers. The long-lasting springs are cadmium coated for low friction and excellent corrosion resistance. The magazine require no lubricants and can be easily disassembled without tools for cleaning.
Note: Shipping restrictions are active in CA, CO, CT, HA, IL, MA, MD, NJ, and NY for magazines with 16 or more rounds.