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. 22LR 10 round OEM Glock 44 magazine Constructed of Hardened Metal Encased in Durable Polymer Viewing Windows Polymer Base Plate By adding this item to your cart you understand and agree and certify that you will comply with all applicable federal, state and local laws and regulations.