Surefire 100-Round 5.56/223 AR-15 High-Cap Magazine

The 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. The long-lasting springs are cadmium coated for low friction and excellent corrosion resistance. Magazines require no lubricants and can be easily disassembled without tools for cleaning.

SureFire High-Capacity magazines provide distinct tactical advantages: increased initial firepower in ambush situations; fewer reloads overall, which means less downtime and target distraction in a firefight; fast and easy magazine insertion, even with a closed bolt; less bulk compared to drum mags, enabling a normal weapon grip.

Product Features and Specs

• Compatible with all weapons that accept standard STANAG 4179 compliant magazines
• Reliable functioning due to mechanical simplicity and high-quality non-binding coil spring—no lubricants required
• Long-lasting springs are cadmium coated for low friction and excellent corrosion resistance
• Easily seated in weapon with bolt forward
• May be kept fully loaded for extended periods without spring fatigue
• Only 1.66” thick, less than two 30-round magazines clipped together
• 100-round magazine fits in optional MOLLE-compatible pouch

• Length: 12.20 inches
• Width: 1.66 inches
• Weight Empty: 9.6 ounces
• Weight Loaded: 3.3 pounds

Not for sale to residents of California, Colorado (Effective July 2013), Connecticut, DC, Hawaii, Chicago and Cook County IL, Maryland, Massachusetts, New Jersey, New York and Ohio.