The Agency Arms magazine extension for Glock 19 adds five rounds to your factory 15-round mag, giving you a 20-round capacity without sacrificing reliability or fit. Built for shooters who want more ammunition on tap—whether you're running defensive drills at the range, competing in action sports, or just prefer higher capacity—this extension is a straightforward way to increase your mag's potential without swapping platforms.

Agency Arms focuses on practical upgrades that work. This mag extension maintains Glock's proven reputation for function; it simply adds real estate to your existing magazine. The black finish matches standard Glock components and carries the durability you'd expect from a reputable manufacturer in the tactical and duty community.

If you shoot a Glock 19 and want to maximize your magazine capacity in a single upgrade, this extension eliminates the need to carry multiple standard-capacity mags for the same firearm. It's compatible, straightforward, and adds 33% more rounds per magazine.

Key Features

• Adds 5 rounds to Glock 19 15-round magazines (20-round total capacity)
• Black finish for standard appearance
• Designed for reliability and function with factory Glock magazines
• Practical upgrade for range, competition, and defensive use

Frequently Asked Questions

Will this work with my Glock 19 factory magazine?

Yes, this extension is designed specifically for the Glock 19 15-round magazine.

How much capacity does this add?

The extension adds 5 rounds, bringing your total capacity from 15 to 20 rounds per magazine.

What color does it come in?

It comes in black.