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The Shield Arms +5 Magazine Extension takes the newer Glock 43X and Glock 48 factory 15-round magazine and bumps it up to a full 20 rounds. That means your slim-frame carry gun runs at 20+1, getting you closer to full-size capacity without changing the footprint of the magazine or adding much weight. It's a simple upgrade that makes a real difference whether you're on the clock at a match, burning through drills, or setting up a home defense pistol you want to count on.
Shield Arms machines this piece from 6061 aluminum and finishes it with a Type II anodized coating, so it holds up to corrosion and the kind of wear that comes with daily carry and regular range time. Every kit ships with a plus-power replacement spring tuned to feed reliably at the higher round count, along with all the hardware you need to get it on. Installation is a drop-in job with no gunsmithing and no permanent changes to your magazine or firearm, and most folks have it done in just a few minutes.
Here's the part worth reading twice: this extension is built specifically for the Glock factory OEM 15-round 43X/48 magazine. It will not work with OEM 10-round magazines, and it's not made for Shield Arms S-Series magazines like the S15. If you've already got those factory 15-rounders sitting in your range bag, this is the piece that gets more out of them.
Shield Arms stands behind this one with a lifetime warranty plus their Spring for Life guarantee, meaning replacement springs down the road are covered. It's made in Montana, and the build quality reflects that. For 43X and 48 owners who already like how their pistol carries and just want more ammo on tap, this is about as clean an upgrade as it gets.
It's made for the Glock factory OEM 15-round magazine used in the 43X and 48. It does not fit OEM 10-round magazines, and it's not compatible with Shield Arms S-Series magazines like the S15. If you're running the factory 15-rounders, this is the right piece.
The extension takes the OEM 15-round magazine up to 20 rounds, giving your 43X or 48 a 20+1 configuration. That's a meaningful jump in capacity without changing the slim profile that makes these pistols easy to carry.
No. It's a drop-in install with the included hardware and makes no permanent changes to your magazine or pistol. Most people have it on in a few minutes, and the plus-power spring in the box swaps in during the same install to keep feeding reliable at the higher count.
Adding rounds means the spring has to push a taller stack, so Shield Arms includes a plus-power spring tuned for the 20-round capacity. Installing it with the extension keeps feeding consistent. The Spring for Life guarantee also covers replacement springs down the road.
| UPC | 810159262385 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | G43X48-OEM15-ME-5-BLK |
| Color | Black |
| Model | |
| Product Type | Magazine Extension |
| Shipping Weight | 0.06 |
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