Introducing a brand new Glock 17 OEM 17-round 9mm magazine, now enhanced with a pre-installed anodized Shield Arms +5 magazine extension. This innovative extension features a unique, easy-access floor plate design, allowing you to quickly reach the spring and follower without needing to remove the extension from the magazine body. Enjoy peace of mind with our 100% lifetime warranty and the Shield Arms Spring for Life guarantee, ensuring your magazine performs flawlessly for years to come. Upgrade your Glock 17 with this reliable and high-capacity solution today.