The Shield Arms G17ME5RED Magazine Extension for Full Size Glock is a red aluminum base pad that adds real capacity to your 9mm or .40 S&W magazines without the bulk of a larger frame gun. If you run a Glock 17, 19X, 34, or 45 in 9mm, this extension adds 5 rounds per mag; for .40 S&W shooters with a Glock 22 or 35, you get 4 additional rounds. It's the kind of simple upgrade that gives you more rounds downrange without changing your gun or holster fit.
Built from 6061 aluminum and Type 2 anodized in that distinctive red finish, the Shield Arms extension is machined for durability and machined-in index cuts along the body give you positive grip texture when drawing from a mag pouch. The design is thoughtful: the easy access floor plate lets you service the spring and follower without removing the extension from the magazine tube itself—useful for cleaning or maintenance in the field. It fits standard OEM Glock magazines and most aftermarket flared mag wells, so it's compatible with your existing setup.
Installation is straightforward, and Shield Arms backs this extension with their lifetime warranty and Spring for Life guarantee, so you're covered. Made in the USA, it ships with their +10% power spring, engineered to handle the extra rounds reliably.
| Brand | Shield Arms |
| Product | G17ME5RED Magazine Extension |
| Caliber/Fit | 9mm (Glock 17/19X/34/45) – adds 5rd; .40 S&W (Glock 22/35) – adds 4rd |
| Material | 6061 Billet Aluminum, Type 2 Anodized |
| Color | Red |
| Compatibility | OEM Glock magazines, most aftermarket flared mag wells |
| Included Spring | Shield Arms +10% power spring |
| Origin | Made in the USA |
| Warranty | Lifetime warranty; Spring for Life guarantee |
The Shield Arms G17ME5RED is designed for full-size Glock frames. It fits Glock 17, 19X, 34, and 45 in 9mm (adding 5 rounds) and Glock 22 and 35 in .40 S&W (adding 4 rounds). It works with OEM Glock magazines and is compatible with most aftermarket flared mag wells.
Yes. The unique easy access floor plate design allows you to remove the spring and follower for cleaning or maintenance without having to disassemble the extension from the magazine tube. This makes field maintenance and cleaning much simpler.
The Shield Arms G17ME5RED ships with their +10% power spring, engineered to reliably handle the additional rounds the extension provides.
Yes. The extension is designed to fit standard Glock magazine dimensions and is compatible with most aftermarket flared mag wells. The index cuts machined into the body give you better grip and control when drawing from a magazine pouch.
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