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.

Features:

• 13 - Round Capacity
• Constructed of Hardened Metal Encased in Durable Polymer
• Viewing Windows
• Polymer Base Plate

Disclaimer: this is not an Extar product. For warranty and replacement parts for these magazines, please contact GLOCK directly.