Overview Reviews Product Description KCI USA Polymer Magazine, 223 Remington/556NATO, 30 Rounds, Fits AR-15, Black KCI-MZ018-BP Product Videos Product Reviews Write a Review Write a Review × KCI USA MAG KCI USA AR-15 5.56NATO 30RD POLY Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *