Among today's 5.56 NATO rifles, the H&K 93 is a more unique option, but the HK fans out there that have these guns love to run them. To keep these guns going, a solid magazine is needed, and these H&K 93 polymer magazines are built right to keep your range days active and trouble-free. To keep things affordable, the magazine body on each of these H&K 93 mags is molded from DuPont's Zytel-based polymer, which has a reputation for durability. Inside the magazine, you'll find a long-lasting magazine spring made from heat-treated, chrome-silicon wire, which is topped by an injection-molded follower. These H&K 93 magazines are designed for use with 5.56 NA Mfg: Pro Mag