Cross Armory Crg+0Meg17Rd Mag Ext Glock 17/22/31 Gen 1-5 Red Alumn

The Cross Armory magazine extension for Glock 17, 22, and 31 is a straightforward way to add round capacity to your duty or carry pistol. Built from red anodized aluminum, this extension mounts directly to factory Glock magazines and works across all generations—Gen 1 through Gen 5. Whether you're running a 9mm, .40 S&W, or .357 SIG, adding a few extra rounds to the magazine can make a real difference in a fight or at the range.

Magazine extensions live in a simple space: they either work reliably or they don't. Cross Armory has built a solid reputation for no-nonsense parts that do exactly what they're supposed to do. This extension adds capacity without requiring modifications to your existing magazines, and the aluminum construction keeps weight minimal while maintaining durability in daily carry or high-round-count training sessions.

The red finish is a nice touch if you want to color-code your duty mags or just prefer a little visual distinction on the range. Drop it onto your current Glock magazine and you're done—no gunsmith, no permanent changes, no guessing about compatibility.

Key Features

• Fits Glock 17, 22, and 31 across all generations (Gen 1–5)
• Red anodized aluminum construction for durability and corrosion resistance
• Adds capacity to standard Glock magazines
• No modifications required—mounts directly to factory magazines
• Lightweight design suitable for carry or competition use

Specifications

Frequently Asked Questions

Will this Glock magazine extension fit my Gen 5 Glock 17?

Yes. This Cross Armory extension is compatible with Glock 17, 22, and 31 across all generations from Gen 1 through Gen 5.

Do I need to modify my magazine to use this extension?

No. The extension mounts directly to factory Glock magazines without requiring any permanent modifications or gunsmith work.

What calibers does this work with?

This extension fits Glock 17 (9mm), Glock 22 (.40 S&W), and Glock 31 (.357 SIG) magazines.

Can I use this for carry or duty use?

Yes. The aluminum construction is durable and lightweight enough for daily carry, duty use, or range training. The specific capacity added depends on the factory magazine it's mounted to.