The ASC AR-15 .223 / 5.56 5-Round Stainless Steel Magazine is a performance-enhanced centerfire rifle magazine, that offers ultra-reliable performance at an affordable price. This lightweight magazine features durable 410 stainless steel construction with a corrosion-resistant blued or flat dark earth finish for superior strength and corrosion resistance in harsh tactical environments. The chrome silicon spring and injection-molded polymer follower ensure reliable and smooth feeding in high-stress target or defensive situations.