KCI USA AR-15 Magazine Features The KCI USA 21 round magazine is molded from a proprietary polycarbonate that resists cracking and warping under repeated use giving shooters a durable alternative to standard aluminum or steel-bodied magazines. An anti-tilt follower keeps the stack aligned through the last round reducing the chance of a feeding malfunction under recoil or rapid fire. The stainless steel internal feed lips add long-term durability at the point of highest wear so the magazine holds its geometry and feeding reliability over thousands of cycles. A textured exterior surface gives shooters a confident intuitive grip when reloading quickly under pressure. Compatible with AR-15 M16 and M4 pattern rifles this magazine drops into virtually any standard AR lower without modification. The translucent smoke polycarbonate body with dual round count markings lets a shooter check remaining ammunition from either side without removing the magazine a genuine advantage for range sessions and training drills alike. At 4.2 ounces it adds negligible weight to a loadout while offering the reinforced reliability of a stainless steel spring and feed lip system. This magazine is a solid visually distinct addition for any AR-15 owner shopping for sale at GrabAGun. KCI AR-15 Magazine Specifications Manufacturer: KCI USA Model: AR-15 Magazine Caliber: .223 Rem / 5.56 Capacity: 21 Rounds Color: Translucent Smoke Material: Polycarbonate Compatible Hosts: AR-15 / M16 / M4 Weight: 4.2 oz Available At: GrabAGun