Shop › DURAMAG 20RD 5.56 ALUM MAG BL/BK DURAMAG 20RD 5.56 ALUM MAG BL/BK $18.70 DURAMAG Magazine, 223 Remington/556NATO/300 Blackout, 20 Rounds, Fits AR-15, Black AGF Follower, Aluminum, Blue 2023005175CPD Quantity: Add To Cart Added! DURAMAG Magazine, 223 Remington/556NATO/300 Blackout, 20 Rounds, Fits AR-15, Black AGF Follower, Aluminum, Blue 2023005175CPD