GLOCK OEM Magazine, 9MM, 19 Rounds, Fits All Generations of G17/19X/34, Cardboard Style Packaging, Coyote Brown 47488 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.