Agency Mag Ext For G19 15rd +5 Blk
Agency Arms
$65.69
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Agency Arms
Agency Mag Ext For G19 15rd +5 Blk
The Agency Arms G19 +5 Magazine Extension is a precision-machined capacity upgrade engineered for Glock 19 shooters who demand reliable performance and a professional-grade finish without compromising on control or durability.
- Increases 9mm capacity by 5 rounds for a total of 20 rounds on tap
- Machined from 6061 aluminum with Type 3 hard anodize for maximum wear resistance
- Dot matrix panel surface provides a clean, customizable marking area
- Chrome silicon alloy spring ensures consistent feed reliability under pressure
- Extended ledge basepad enables confident one-handed magazine manipulations
- Compatible with Glock 19, 23, and 33 — designed for 15-round magazines only
Who This Is For
This extension is purpose-built for competitive shooters, serious range enthusiasts, and Glock 19, 23, or 33 owners looking to maximize capacity and improve reload efficiency. It's an ideal upgrade for USPSA, 3-Gun, or any high-round-count discipline where every extra round and a positive magazine grip can make a measurable difference. Note that this extension is designed exclusively for 15-round magazines and will not function with 10-round magazines.
Specifications
| Brand | Agency Arms |
|---|---|
| Compatible Pistols | Glock 19, 23, 33 |
| Magazine Compatibility | 15-round magazines only (not compatible with 10-round) |
| Capacity Increase (9mm) | +5 rounds |
| Capacity Increase (.40 S&W / .357 Sig) | +4 rounds |
| Material | 6061 Aluminum |
| Finish | Type 3 Hard Anodized, Black |
| Spring Material | Chrome Silicon Alloy |
| Country of Origin | Made in the U.S.A. |
| Color | Black |
Frequently Asked Questions
Will this magazine extension work with my Glock 19 Gen 5?
Agency Arms designed this extension to be compatible with Glock 19, 23, and 33 magazines. It is compatible with Gen 3, Gen 4, and Gen 5 Glock 19 pistols, provided you are using a standard 15-round magazine. It will not work with 10-round restricted magazines. Always verify fit before use.
Does this extension also work with .40 S&W or .357 Sig magazines?
Yes — when used with compatible .40 S&W (Glock 23) or .357 Sig (Glock 33) magazines, this extension adds 4 rounds of capacity rather than 5. The chrome silicon alloy spring included is rated to handle the additional stack height reliably across all three calibers.
Are there magazine capacity restrictions I should be aware of in California?
Yes. California law currently restricts magazine capacity to 10 rounds for most civilian use. This +5 extension is designed for 15-round magazines, which would result in a 20-round 9mm magazine — exceeding the legal limit in California. Customers in California and other restricted states should review local and state laws before purchasing this product. Goodland Guns encourages all customers to comply with applicable regulations in their jurisdiction.
