Magpul PMAG GL9 9mm 21-round Magazine for GLOCK G17/G18

$18.95 $18.57
(You save $1.38 )
(57 reviews)
Current Stock:
Adding to cart… The item has been added

Magpul PMAG GL9 9mm 21-round Magazine for GLOCK G17/G18


The Magpul PMAG 21 GL9 is a 21-round Glock 9mm handgun magazine featuring a new proprietary all-polymer construction for flawless reliability and durability over thousands of rounds. Meeting the overall length requirements for a 140MM competition magazine, the PMAG 21 GL9 offers additional capacity without the need for expensive extensions.

High visibility controlled-tilt follower, stainless steel spring, easily removable floorplate for cleaning, paint pen dot matrix for mag marking, ridged floorplate edges for better grip, and capacity indicator windows. Drops free loaded or unloaded. All with the same boring reliability you expect from an OEM magazine.

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.

Made in U.S.A.


  • Compatible with all 9mm double-stack Glock handguns
  • Durable, lightweight, and extremely stiff polymer construction
  • High visibility controlled-tilt follower
  • Long life stainless steel spring for corrosion resistance
  • Flared, easily removable floor plate
  • Dot matrix panel for magazine marking and identification
  • Magazine indicator windows on both sides of body at 10, 15, and 21 rounds remaining
  • Drops free loaded or unloaded


  • 4
    PMAG GL9

    Posted by Christopher Meadows on 13th Sep 2022

    Great price and fast shipping as always

  • 5
    Glock PMag

    Posted by Terry on 17th Apr 2021

    Mags worked as expected. Hard to go wrong with Magpul. Shipping was crazy fast. They went out the same day I ordered.

  • 5
    More magpul

    Posted by KJ on 16th Mar 2021

    Good stuff

  • 5
    Like all PMAGs, Greeeaaatt!

    Posted by Alan on 31st Jan 2021

    Great mag and price. Highly recommended!

  • 5
    Magpul 21

    Posted by Bryan Owens on 9th Dec 2020

    great deals thank you

  • 5
    What do you expect +4

    Posted by Ivan on 9th Dec 2020

    Magpul awesomeness? 4 extra rounds? What’s not to like? They also are easier to reload from pistol mag pouches with the extra height.

  • 5
    Runs like a top.

    Posted by Chris A. on 19th Nov 2020

    I have owned and carried Glocks for over 20 years both personally and professionally. I have never bought a non-Glock factory magazine before now. I went to the range yesterday and ran one of these magazines through 50 rounds in a converted-to-9mm Gen 4 Glock 23 and had zero issues. Magazine ran smooth and without issues. I like to believe I am a man but I couldn't get the 21st round in the magazine. The Glock loader would have handled that just fine. A competition shooter that I work with swears by these mags and now I see why. Will definitely buy more in the future.

  • 5
    Magpul GL Enhanced Magazine Well for GLOCK

    Posted by Warren Sonne on 6th Oct 2020

    Very easy to install. Performs as advertised. After installing on my G17, I ordered and installed another one on my G34.

  • 5
    Always a great experience

    Posted by Joey C on 16th Jul 2020

    This company is just the best to order from. They have great prices, big inventory and always ship super fast!!!!