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The Shield Arms extension transforms your existing OEM Glock magazine into a higher-capacity option without requiring a new firearm or permanent modifications. Drop it onto a Glock 19 or 23 magazine and you're looking at 20 or 17 total rounds depending on your caliber. Whether you're running competition stages, putting in range time, or setting up for duty use, the added capacity comes without sacrificing the reliability you expect from a quality aluminum component.
The standout feature here is how Shield Arms approached the floor plate. Unlike standard extensions that require you to completely remove the component from the magazine body just to service the spring or follower, this design lets you open the floor plate independently. That means faster cleaning between stages at a match or quicker field maintenance when you need it. The included +10% power spring handles the increased stack height without the feeding issues that can plague budget extensions. Machined index cuts on the extension body give you a positive grip when pulling magazines from a pouch under stress.
Machined from billet 6061 aluminum with Type 2 anodized finish, this red extension is durable and corrosion-resistant. It works with OEM Glock 19 and 23 magazines only, and plays well with most aftermarket flared magwells on the market. Installation is straightforward and reversible if you ever need to go back to stock configuration. Made in the USA and backed by Shield Arms' 100% lifetime warranty plus their Spring for Life guarantee, so you know the company stands behind their work.
Yes, it's designed specifically for OEM Glock 19 and 23 magazines across Gen 3, 4, and 5 pistols. It adds 5 rounds to a standard 15-round Glock 19 magazine for a total of 20 rounds. The extension works with OEM magazines only, not aftermarket polymer mags like Magpul.
No special tools are required for installation. You'll need to remove the factory baseplate from your magazine, swap in the included upgraded spring, and slide the extension onto the magazine body. Most users find installation takes around 10 minutes, though you may find a Glock mag tool helpful for removing the factory baseplate.
Yes. The design lets you open the floor plate and access the spring and follower without fully removing the extension from the magazine body. This saves time when you're cleaning between competition stages or doing a field inspection. Standard extensions require full removal, which is more cumbersome.
It's compatible with most aftermarket flared magwells designed for standard Glock magazines. However, compatibility can vary depending on the specific magwell design. If you're unsure, check with the magwell manufacturer or Shield Arms customer service before purchasing.
| UPC | 853465008216 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | G19-ME-5-RED |
| Caliber/Gauge | 9mm |
| Capacity | 5 |
| Color | RED |
| Model | |
| Product Type | Magazine Extension |
| Shipping Weight | 1.55 |
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