Shield Arms +5/+4 Magazine Extension for Glock 17/19X/22/34/35/45

The Shield Arms Magazine Extension is a machined aluminum floor-plate designed to increase capacity on specified Glock factory magazines while permitting on-magazine spring and follower service. Constructed from billet 6061 aluminum with a Type II anodized finish, the extension features index cuts for improved grip when drawing from a pouch. Manufacturer materials indicate compatibility across multiple Glock OEM magazines with model-specific capacity increases.

Key Specifications

• Manufacturer: Shield Arms.
• Material: machined from 6061 aluminum.
• Finish: Type II anodized (black).
• Capacity change: +5 rounds to Glock 17/19X/34/45 magazines and +4 rounds to Glock 22/35 magazines.
• Compatibility: designed to fit OEM Glock magazines for models 17, 19X, 22, 34, 35, and 45 as specified by the manufacturer.
• Included spring: supplied with a +10% power spring.
• Service feature: includes an easy-access floor plate allowing spring and follower service without removing the extension from the magazine body.
• Ergonomics: index cuts on the extension body provide improved grip extraction from a magazine pouch.
• Warranty: backed by a manufacturer lifetime warranty and Shield Arms' Spring-for-Life guarantee.

Built for functionality and durable service, this extension offers a straightforward capacity increase and on-magazine serviceability for range, competition, or duty applications. Its machined construction and low-profile design deliver reliable handling and simplified maintenance for shooters who prioritize robust, serviceable components.