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The Glock 43 is known for its compact carry profile, but that 6-round magazine capacity leaves a lot to be desired. The FAB FX-4310GR flips the script, transforming your standard mag into a 10-round powerhouse. This isn't just a quick fix either—it's built from fiberglass-reinforced polymer that's designed to handle regular carry and range use without wearing out.
Instead of asking you to buy new magazines or deal with complex modifications, this extension replaces your existing floor plate. That means you keep the same magazine body and the original factory spring, so there's nothing special to learn or install. The spring plate design is clever enough to work with what you've already got, making the swap straightforward enough that most owners handle it themselves.
One of the real benefits shows up the moment you pick up the magazine. The extension adds roughly an inch of grip, which matters more than you'd think on a compact gun like the 43. Contoured finger indents give you secure purchase during reloads, and that longer grip means your pinky finally has somewhere to live. Real-world feedback shows this small change makes a noticeable difference in how the gun sits in your hand during live fire.
The grey polymer finish blends with most modern gear, and the design is practical enough that it doesn't print when carrying in standard setups. Keep in mind that loading all 10 rounds does require a bit more pressure than the stock 6-round mag—the last round especially is snug. Many owners use a magazine loader to take the strain off. Pre-assembled factory magazines tend to feed more reliably than aftermarket extensions, something to keep in mind if you're modifying existing stock mags.
The extension is designed to hold 10 rounds total, though loading the 10th round requires firm pressure. Many owners use a magazine loader to make it easier. If you're using an aftermarket extension on an existing Glock mag, the fit can be snug and may require some pressure to seat that last round fully.
Yes, the extension replaces your existing floor plate and uses your original magazine spring, so there's no need for new magazines. Simply remove the old floor plate and install this extension. No spring replacement or additional parts are required.
Installation is straightforward since you're just swapping the floor plate. Most owners can do it themselves in a few minutes. You'll need to carefully decompress the spring while removing the old plate, then slide the new extension into place and seat the spring.
Grey provides a more modern aesthetic than traditional black and works well with FDE and other contemporary finishes. Functionally, there's no difference—the color is purely cosmetic and comes down to your gear setup and preference.
| UPC | 7290111587283 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | FX4310GR |
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