Shield Arms Glock 19/23 Magazine Extension +5/+4 — Red

The Shield Arms Glock 19/23 magazine extension increases usable capacity for Glock 19 and Glock 23 magazines while maintaining a low-profile, serviceable design. Machined from billet aluminum with a Type 2 anodized finish, the extension includes an easy-access floor plate so the spring and follower can be serviced without removing the extension from the magazine body. It ships with a higher-tension spring and is backed by Shield Arms’ lifetime warranty.

Key Specifications

• The extension adds 5 rounds to Glock 19 magazines.
• The extension adds 4 rounds to Glock 23 magazines.
• Machined from billet 6061 aluminum for durable service life.
• Finished with a Type 2 anodized red coating.
• Includes a +10% power spring to support increased capacity.
• Features a serviceable easy-access floor plate for cleaning and maintenance without removal.
• Includes index cuts on the extension body to enhance grip when drawing from a pouch.
• Designed to fit OEM Glock 13- and 15-round magazines only.
• Proudly made in the USA.
• Backed by a lifetime warranty and Shield Arms’ Spring for Life guarantee.

Purpose-built for shooters who want a reliable, serviceable capacity increase, this extension balances added rounds with ergonomic handling and durable construction. The easy-access floor plate and included higher-tension spring simplify maintenance and help the magazine integrate with most flared magwells. Magazine not included.

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