Loading...
Loading...
Loading...
Loading...
Shield Arms
The Shield Arms Magazine Extension +5/4 for Glock 19/23 is a compact capacity booster that gives your everyday carry or duty mag the extra rounds you might need without switching platforms. Add 5 rounds to a Glock 19 magazine or 4 rounds to a Glock 23 mag—a meaningful boost for 9mm or .40 S&W shooters who want more firepower in the same grip frame. Machined from 6061 aluminum and Type 2 anodized for durability, this gray extension sits flush with most aftermarket flared mag wells and keeps your gun running true.
What sets Shield Arms apart is the engineering. The unique floor plate design lets you access the spring and follower without removing the extension itself—no more wrestling with your magazine to perform basic maintenance or swaps. Index cuts on the body keep everything aligned, and the extension ships with an enhanced power spring tuned for reliable feeding under the added load. If you're building a reliable Glock setup or topping off your carry mag, this is a clean, American-made solution.
Shield Arms backs this extension with a lifetime warranty and their Spring for Life guarantee, so you're covered if anything goes wrong. Note that this extension is designed for OEM Glock 13 and 15 round magazines—verify your mag generation before ordering to ensure proper fit.
| Brand | Shield Arms |
| Compatibility | Glock 19/23 (OEM 13 and 15 round magazines) |
| Capacity Increase | +5 rounds (Glock 19) / +4 rounds (Glock 23) |
| Material | 6061 Aluminum |
| Finish | Type 2 Anodized Gray |
| Included | Extension body, enhanced power spring |
| Warranty | Lifetime |
| Origin | Made in USA |
Yes—this extension is designed for both platforms. It adds 5 rounds to Glock 19 magazines and 4 rounds to Glock 23 magazines. Make sure your mag is an OEM Glock 13 or 15 round magazine, as the extension is engineered for those generations.
The extension is engineered to fit most aftermarket flared mag wells. If you're running an older or non-standard mag well, confirm fit before installing.
The package includes the extension body and an enhanced power spring tuned to handle the extra rounds. The unique floor plate design means you can service the spring without removing the extension from the magazine body.
Yes. Shield Arms covers this extension with a lifetime warranty and includes their Spring for Life guarantee, so you're protected against defects for as long as you own it.
Shield Arms
The Shield Arms Magazine Extension +5/4 for Glock 19/23 is a compact capacity booster that gives your everyday carry or duty mag the extra rounds you might need without switching platforms. Add 5 rounds to a Glock 19 magazine or 4 rounds to a Glock 23 mag—a meaningful boost for 9mm or .40 S&W shooters who want more firepower in the same grip frame. Machined from 6061 aluminum and Type 2 anodized for durability, this gray extension sits flush with most aftermarket flared mag wells and keeps your gun running true.
What sets Shield Arms apart is the engineering. The unique floor plate design lets you access the spring and follower without removing the extension itself—no more wrestling with your magazine to perform basic maintenance or swaps. Index cuts on the body keep everything aligned, and the extension ships with an enhanced power spring tuned for reliable feeding under the added load. If you're building a reliable Glock setup or topping off your carry mag, this is a clean, American-made solution.
Shield Arms backs this extension with a lifetime warranty and their Spring for Life guarantee, so you're covered if anything goes wrong. Note that this extension is designed for OEM Glock 13 and 15 round magazines—verify your mag generation before ordering to ensure proper fit.
| Brand | Shield Arms |
| Compatibility | Glock 19/23 (OEM 13 and 15 round magazines) |
| Capacity Increase | +5 rounds (Glock 19) / +4 rounds (Glock 23) |
| Material | 6061 Aluminum |
| Finish | Type 2 Anodized Gray |
| Included | Extension body, enhanced power spring |
| Warranty | Lifetime |
| Origin | Made in USA |
Yes—this extension is designed for both platforms. It adds 5 rounds to Glock 19 magazines and 4 rounds to Glock 23 magazines. Make sure your mag is an OEM Glock 13 or 15 round magazine, as the extension is engineered for those generations.
The extension is engineered to fit most aftermarket flared mag wells. If you're running an older or non-standard mag well, confirm fit before installing.
The package includes the extension body and an enhanced power spring tuned to handle the extra rounds. The unique floor plate design means you can service the spring without removing the extension from the magazine body.
Yes. Shield Arms covers this extension with a lifetime warranty and includes their Spring for Life guarantee, so you're protected against defects for as long as you own it.
