Engineered for superior reliability at an affordable price, the Promag® AR-15 Rollermag™ .223 Rem, 5.56 NATO 5-Round Magazine features a durable, yet lightweight DuPont® Zytel™ polymer body with aggressive texturing for speedy reloads and a sure grip—even with sweaty or gloved hands. A heat-treated chrome silicon wire internal spring eliminates binding, while the patented, anti-tilt roller follower ensures effortless feeding performance and smooth, reliable operation. Plus, the polymer floorplate is easily removable for maintenance and cleaning. Made in USA.