$22.60
12 in stock
Online inventory may differ from in-store availability.
Quick turnaround so you get your gear sooner.
Trusted checkout with industry-standard protection.
Keeping Traditions Alive Since 1953
Secure Transactions provided with 
The Glock 43 is a fantastic pocket pistol, but six rounds in the magazine can feel limiting. The FAB Defense FX4310B changes that with a simple floor-plate replacement that brings your capacity up to 10 rounds without requiring any special tools or permanent modifications to your magazines.
The 43-10 uses an innovative dual-spring design that works alongside your original magazine spring. Instead of forcing you to buy a new, stiffer spring, the extension has its own coil springs built in that support the factory spring, letting the whole system reliably feed ten rounds. This means you're using parts you already have, which keeps things simple and lets you install it and remove it without any hassle.
One of the biggest perks is what this extension does for your grip. The Glock 43 is narrow and designed for concealment, which sometimes means your pinky hangs off the bottom. With the FX4310B installed, you get that full-length grip you'd expect from a larger gun, and the contoured finger indents on the extension itself make magazine changes easier and more secure. That extra inch or so of grip real estate makes a noticeable difference if you're used to shooting with a compromise grip.
Installation takes a bit of patience but no gunsmithing. You'll need to remove the factory floor-plate from your Glock magazine, which can be tight, and then clamp the two-piece extension onto the magazine with a couple of Allen screws. Once it's on, it works. Users report reliable feeding and no malfunctions after breaking in the springs, though some mention the tenth round can be tight at first and loosens up over time or with a magazine loader. The extension is made from fiberglass-reinforced polymer, so it's durable without adding much weight. It finishes in black matte, keeping a low profile.
The Glock 43 uses different magazine generations, and some users report that with newer factory magazines, you might actually get a reliable nine or ten rounds instead of a full four extra. The 10th round can require firm hand pressure to chamber initially, but most users say it improves with use. Also, if you run a grip plug on your Glock, you'll need to remove it for this extension to fit properly.
No. The FX4310B is designed to work with your original Glock 43 magazine spring. It has its own dual coil springs built in that support the factory spring, so you can use any Glock 43 magazine you already own.
Installation is straightforward but requires patience. You remove the factory floor-plate from your magazine, then clamp the two-piece extension onto the magazine with a couple of Allen screws. No gunsmithing is required, though removing the factory floor-plate can be tight. Most people get it done in 15 minutes once they figure out the process.
The 10th round is typically tight when the extension is new, especially with hand-loading. Many users find it gets easier after the springs break in over the first 100 rounds or so. Using a magazine loader makes loading faster and less fatiguing. Some newer generation Glock 43 magazines may not reliably accept a full 10 rounds, in which case nine is more practical.
No. The extension does not fit with a grip plug installed on the frame. You'll need to remove it if you want to use the extended magazines. Some users file the magazine follower at an angle to help the 10th round seat more easily, which can improve reliability with tight loads.
| UPC | 7290105944771 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | FX4310B |
| Brand Fit | Glock |
| Capacity | 4 |
| Model | |
| Model Fit | G43 |
| Product Type | Magazine Extension |
| Shipping Weight | 0.13 |
You must be logged in to post a review.
Reviews
There are no reviews yet.