Shield Arms Magazine Extension +5/4 for Glock 19/23 – OD Anodized

The Shield Arms Magazine Extension adds 5 rounds to factory Glock 19 magazines or 4 rounds to Glock 23 magazines, significantly increasing capacity without requiring a different magazine body. This extension is designed for shooters who want more rounds on tap for competition, duty, or self-defense without carrying a full-size pistol.

Machined from aluminum with an OD anodized finish, this extension features a reinforced polymer insert that maintains reliable spring tension and feeding. Installation requires disassembly of the factory magazine—remove the base plate, install the extension and provided spring, and reassemble. No permanent modification to the firearm or magazine tube is required.

• Part Type: Magazine Extension
• Compatible Firearms: Glock 19 (Gen 1-5), Glock 23
• Capacity Increase: +5 rounds (9mm), +4 rounds (.40 S&W)
• Material: Aluminum body, reinforced polymer insert
• Finish: OD Anodized
• Installation: Drop-In (magazine disassembly required)
• Includes: Extension body, spring, polymer insert