A Glock 17 OEM 17-round 9mm magazine with a preinstalled Shield Arms +5 rounds extension.

Our unique, easy access floor plate design allows you to quickly access the spring and follower without having to remove the extension from the magazine body. Comes with a 100% lifetime warranty, and the Shield Arms Spring for Life guarantee.

Compatible with Glock® 17/34/19X/45

Magazine Extension Features:

·         Unique easy access floor plate design to service or clean the magazine body without the need to remove the magazine extension from the magazine body.

·         Index cuts on the extension body to increase grip when coming out of a magazine pouch.

·         Machined from billet 6061 aluminum

·         Type 2 anodized

·         Adds 5 rounds to Glock 17 9mm

·        USPSA 141.25mm Magazine Gauge Compliant

·         Comes with a +10% power spring

·         Proudly made in the USA

·         Lifetime warranty

Disclaimer: Use of this extension requires removal of the pistol's lanyard loop.  

Note: In 2025 Shield Arms' mud anodizing shade slightly changed. Items previously purchased may not be an exact match to the new shade. 

Please check your state and local laws regarding magazine capacity restrictions.