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If you run a compact Glock 26 or 27, you probably like the size, but full-size G17 and G22 magazines sit proud of the grip without something to fill the gap. That's where the ProMag PM089A comes in. This spacer bridges the distance between your compact frame and longer magazine floorplates, giving you a practical way to boost capacity with magazines you may already own.
The spacer is injection-molded polymer with a textured finish that matches standard Glock grip surfaces, so it doesn't look out of place when installed. Installation is straightforward: you mount it at the base of the frame and secure it with a single Allen-head cap screw. Nothing permanent, nothing complicated. You can remove it anytime if you want to switch back to compact mags or need the smaller profile for deep concealment. The polymer construction is durable and designed to handle regular use without issues.
This spacer works with Glock 17 (9mm) and Glock 22 (.40 S&W) magazines paired with your 26 or 27 frames. ProMag also makes a separate version for 19/23 magazines if that's your preference. One important compatibility note: this spacer doesn't fit Gen 4 Glock pistols, so verify your gun's generation before ordering. For earlier gens (Gen 1-3), it works without issue.
People carry compact Glocks because they're easy to conceal, but magazine capacity is always a trade-off. This spacer lets you keep that concealability while running longer mags when you're not trying to stay super low-profile. It's the kind of simple accessory that doesn't do anything fancy—it just solves a real problem that compact gun owners face.
No, this ProMag spacer is not compatible with Gen 4 Glock pistols. It's designed for Gen 1, 2, and 3 models only. If you have a Gen 4 frame, check if ProMag makes an alternative solution or consider other magazine adapters designed for Gen 4 compatibility.
No, this specific model (PM089A) only works with Glock 17 and 22 magazines. ProMag does make a separate spacer designed for 19/23 magazines (model PM089) if that's what you're looking for. Make sure you order the correct version for your magazine type.
You'll need an Allen wrench or hex key to install the single cap screw that secures the spacer. Most people have basic tools on hand, and installation takes just a few minutes. The spacer can also be removed just as easily if you want to switch back to a different setup.
This ProMag spacer is mounted to your pistol frame with a screw, not to the magazine itself. That means it stays on your gun and doesn't transfer from mag to mag. Other solutions like sleeve adapters work fine too—it just comes down to whether you want your magazine adapter attached to the gun or to the magazine.
| UPC | 708279005992 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | PM089A |
| Brand Fit | Glock |
| Caliber/Gauge | 9mm Luger/40 Smith & Wesson (S&W) |
| Capacity | 0 |
| Model | |
| Model Fit | G17, 22 |
| Product Type | Magazine Spacer |
| Shipping Weight | 0.1313 |
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