GLOCK OEM Magazine, 9MM, 17 Rounds, Fits GLOCK 17/34 Gen 5 and Prior Generations, Cardboard Style Packaging, Orange Follower, Black 33814 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.