Magpul PMAG GL9 9mm Luger Magazine for Glock 17/34 Gen 1-4, Polymer Black

The Magpul PMAG GL9 9mm Luger magazine brings proven aftermarket reliability to your full-size or compact Glock 17/34 Gen 1–4. Built from Magpul's proprietary all-polymer construction, this magazine delivers the same trusted durability that's made PMAGs the go-to choice for competition shooters, defensive carriers, and serious practitioners. At 21 or 27 rounds depending on the variant, you get capacity beyond factory Glock magazines without awkward extensions, and it feeds flawlessly whether you're drilling at the range or training for duty.

What sets the PMAG GL9 apart is attention to details that matter in real use. The controlled-tilt follower sits high-visibility yellow for quick visual reference. Both sides of the magazine body feature round-count witness holes so you know exactly how many rounds remain. The floorplate flares slightly outward for easier purchase when stripping the mag during cleaning—and it pops off tool-free. A stainless steel spring resists corrosion far better than common mild steel, and the ridged edges on the floorplate give you a sure grip when seating it firmly into the magwell. For shooters who run multiple loads or setups, the paint pen dot matrix on the body lets you quickly mark ammunition types or duties.

Drop-free from the gun whether loaded or unloaded, the PMAG GL9 works reliably across the full range of Glock 9mm double-stack platforms—full-size, compact, and sub-compact models that allow for some magazine protrusion below the grip. Made in the USA by a company built on the idea that gear should work as hard as you do. If you're running Glocks for sport, duty, or defense, a couple of PMAGs GL9 belong in your kit.

Key Features

• Proprietary polymer construction designed for durability and light weight
• Capacity options of 21 or 27 rounds for competitive-length compliance without magazine extensions
• High-visibility controlled-tilt follower for positive round tracking
• Witness holes on both sides for quick capacity verification
• Easy-access floorplate with flared edges for faster cleaning and maintenance
• Stainless steel spring resists corrosion
• Paint pen dot matrix for load identification and marking
• Drop-free feeding from Glock 17/34 Gen 1–4
• Made in the USA

Specifications

Frequently Asked Questions

Will this magazine work in my Glock 17 or 34?

Yes. The PMAG GL9 is compatible with Glock 17 and 34 pistols in generations 1 through 4, as well as compact and sub-compact Glock 9mm double-stack variants, provided the magazine protrudes slightly below the grip. Check your specific model's manual if you're unsure.

What capacity does the PMAG GL9 hold?

The PMAG GL9 comes in two capacities: 21 rounds or 27 rounds, depending on which variant you select. Both are designed to meet competition magazine length requirements without needing add-on extensions.

Can I easily clean and maintain this magazine?

Absolutely. The floorplate is purpose-designed to come off by hand without tools. Once you pop it free, you can rinse out the interior, dry the spring, and reassemble it—all in seconds.

How do I mark different ammunition loads on the magazine?

The body features a paint pen dot matrix printed on the polymer. You can use a paint pen or marker to fill in dots corresponding to your ammunition type, training load, or duty round—making fast visual ID possible even in a duty bag or range bag.