GLOCK OEM Magazine, 9MM, 17 Rounds, Fits All Generations of Glock 17/19X/34, Cardboard Style Packaging, Coyote Brown 47487 Each GLOCK magazine is constructed from a hardened steel insert encased in high tech polymer to protect the magazine and prevent deformation" even when dropped from a great height. The high quality spring and follower ensure reliable feeding from the first to the last shot.