Global Ordnance Magazine, 9MM, 33 Rounds, Fits GLOCK 17/34, Black 850003223063 These production magazines are made in South Korea and are a high quality" reliable third-party replacement magazine for a Glock . These magazines have a hardened steel insert which is encased in a high tech polymer (which is fully metal lined). The polymer coating protects the magazine and prevents deformation" even when dropped from great heights.