The MFT 20 Round Window Extreme Duty AR-15 5.56 x 45mm Magazine is made of long glass fiber polymer, providing enhanced strength for extended use. The dual side windows feature numerical markers, and the spring features a high-visibility coil. Mission First Tactical MFT 20 Round Window Extreme Duty AR-15 5.56 x 45mm Magazine Beige Dark - Shooting Supplies And Accessories at Academy Sports
