The Shield Arms +5/+4 magazine extension increases capacity for Glock 19 and Glock 23 magazines while maintaining a slim profile for carry and range use. It adds five rounds to compatible Glock 19 magazines and four rounds to compatible Glock 23 magazines. The extension is machined from billet 6061 aluminum and finished with Type II anodizing in gold for corrosion resistance and a refined appearance. Designed with an easy-access floor plate, the unit allows quick service of the spring and follower without removing the extension from the magazine body.
Key Specifications
- The product is a +5/+4 magazine extension designed for Glock serviceability and capacity.
- Compatible with Glock 19 (Gen 3/4/5) and Glock 23 (Gen 3/4/5) magazines.
- Increases capacity by +5 rounds for Glock 19 magazines.
- Increases capacity by +4 rounds for Glock 23 magazines.
- Machined from billet 6061 aluminum for consistent fit and finish.
- Finished with Type II anodizing in gold for durability and appearance.
- Includes a +10% power spring to assist reliable feeding with increased capacity.
- Features an easy-access floor plate that permits spring and follower service without removal.
- Designed to fit OEM Glock 13- and 15-round magazines only, per manufacturer guidance.
- Backed by a lifetime warranty and the Shield Arms Spring for Life guarantee.
Durable, serviceable, and engineered for everyday carry or range use, this Shield Arms extension offers a practical capacity increase without compromising magazine handling. Its machined construction and anodized finish provide long-term reliability and a distinctive appearance that integrates cleanly with most setups.
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