Shop › ETS MAG AR556 30RD COUPLED SMK G2 ETS MAG AR556 30RD COUPLED SMK G2 $16.50 sold out Elite Tactical Systems Group Magazine, Generation 2, 223 Remington/556NATO, Fits AR15, 30 Rounds, Matte Finish, Carbon Smoke, Integrated Coupler SMK-AR15-30CG2 Sold Out Added! Elite Tactical Systems Group Magazine, Generation 2, 223 Remington/556NATO, Fits AR15, 30 Rounds, Matte Finish, Carbon Smoke, Integrated Coupler SMK-AR15-30CG2