⚠️  CA customers! AB1263 is in effect, learn more here.  ⚠️

PMAG® 21 GL9® – GLOCK®

Extra capacity, same PMAG reliability

Out of stock
Only %1 left
SKU
MAG661
$19.95 Regular Price $19.95
$19.95 Regular Price $19.95
add to cart button add to cart button Add To Cart
Select Option
Notify Me
Be the first to know when this product is available
You're signed up!
  • Magpul Made in the USA Icon MADE & ENGINEERED IN THE USA
  • Magpul Free Shipping Icon FREE SHIPPING on orders over $75
  • Magpul Satisfaction Icon 100% SATISFACTION guaranteed

Product Details

For polymer perfection plus extra ammo, the PMAG 21 GL9 holds 21 rounds of 9mm, offering the same smooth, dependable performance as our other PMAGs for GLOCK-pattern, Ruger® RXM, and similar double-stack firearms. The PMAG 21 GL9 also meets 140mm competition requirements and holds more rounds to help you burn down a stage with fewer reloads. When empty, the PMAG follower locks the slide back in the open position and the PMAG drops free cleanly when loaded or unloaded.

Made in the USA.

Features

  • Fits a wide range of full-size, compact, and sub-compact 9mm double-stack GLOCK-pattern firearms
  • High-visibility controlled-tilt follower offers easy visual ammo check and delivers smooth, dependable feeding. The follower also locks the slide back when the magazine is empty
  • The rugged, durable, and lightweight polymer body and stainless-steel spring provide long-lasting, reliable operation
  • Removable flared floorplate with ridged edges provides a positive grip and makes cleaning and maintenance easy
  • Indicator windows on sides of the PMAG show 10, 15 and 21 rounds remaining
  • Paint pen dot matrix for magazine marking
  • PMAG drops free when loaded or unloaded for fast reloads

HIGHLY COMPATIBLE

Brings added capacity and Magpul reliability to any full-size, compact, or sub-compact 9mm double-stack GLOCK handgun

ROUNDS REMAINING INDICATOR

Magazine indicator windows on both sides of the magazine body at 10, 15, and 21 rounds remaining

IMPROVED FLOORPLATE

Designed with a flared, easily removable floor plate for efficient operation

EASY IDENTIFICATION

Use the paint pen dot matrix to easily identify your different loads when it's crunch time

RUGGED POLYMER BODY

Durable, lightweight, and extremely stiff polymer construction

 

ADVANCED FOLLOWER

High visibility controlled-tilt follower

 

ENGINEERED TO LAST

Long life stainless steel spring for corrosion resistance

Resources

E.A.R.
Export Administration Regulations Controlled Product

EXPORT NOTICE: This is an item controlled for export by the Export Administration Regulations (EAR) under the Commerce Control List (CCL). These controls take the form of export regulations and license requirements. As part of the express consideration provided for receipt of Magpul's goods, technical data and/or services, you, our customer, acknowledge that the export, re-export or other transfer, directly or indirectly, of the goods, technical data and/or services provided by Magpul in violation of U.S. law is prohibited. Customers acquiring controlled goods, technical data and/or services from Magpul shall be responsible for obtaining any necessary U.S. or other government authorization required to ensure compliance with applicable export laws. (See Magpul Compliance Notices page for more information).

PLEASE NOTE: Certain U.S. jurisdictions restrict firearm magazines sales. Magpul Industries cannot process sales/shipments prohibited by law. A list of states and municipalities restricting firearm magazine sales is available here.

WARNING: Observe safe firearm handling practices at all times. Failure to do so may result in serious bodily injury or death. Magpul Industries shall not be responsible for injury, death, or property damage resulting from faulty installation, misuse, illegal use, or modification of this product.

Technical Specifications

More Information
Caliber 9x19mm Parabellum
Platform GLOCK®, Ruger® RXM®
Capacity 21 rounds
Weight 1.7 oz.
Compatibility The PMAG 21 GL9 is compatible with all full-size, compact, and sub-compact double-stack GLOCK 9mm variants with some protrusion below the grip

Reviews

Questions

United States © 2026 Magpul Industries Corp. All Rights Reserved.