Shop › MAGPUL PMAG M3 5.56 WINDOW 30RD MCT MAGPUL PMAG M3 5.56 WINDOW 30RD MCT $17.05 Magpul Industries Magazine, PMAG 30 AR/M4 M3 With Window, 223 Remington/556NATO, 30 Rounds, Fits AR Rifles, Medium Coyote Tan MAG556-MCT Quantity: Add To Cart Added! Magpul Industries Magazine, PMAG 30 AR/M4 M3 With Window, 223 Remington/556NATO, 30 Rounds, Fits AR Rifles, Medium Coyote Tan MAG556-MCT