Magpul PMAG 21 GL9 GLOCK 9mm Magazine - Black

MPN: Mag661
Manufactured by Magpul Industries
3 Reviews

Please add to cart for your price


In Stock

"We ship fast!" Order by 4PM CST M-F or 11AM CST Saturday and your order ships same day. FFL items may take longer to process.

Please add to cart for your price


In Stock

Magazines considered High Capacity are controlled by the ATF and/or local jurisdictions are not available for purchase/shipment in all areas.


Magpul continues to grow and develop based on innovation, simplicity, and efficiency. At Magpul, mission driven requirements inform their product design, materials, and manufacturing, focusing on efficiency without sacrificing quality or performance.

The PMAG 21 GL9 is a 21-round Glock 9mm handgun magazine featuring a proprietary all-polymer construction for reliability and durability over thousands of rounds. Meeting the overall length requirements for a 140 mm 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.

NOTE: 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.

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


Caliber Gauge9mm Luger
Magazine Capacity21
ManufacturerMagpul Industries
PlatformGlock Magazines

Ratings & Reviews

3 reviews

  • 3 stars
  • 0 reviews
  • 2 stars
  • 0 reviews
  • 1 star
  • 0 reviews

Perfect for a 9mm AR

by -

Bought to use in my Foxtrot Mike AR 9mm. Locks in tight and feeds like a dream. Couple hundred rounds through with no problems. Will be buying more and waiting for PA to get the 30 Round Magpul. Only gripe is they are not fun to load beyond 15 rounds if you don't have an assist of any kind.

Excellent, but with one drawback


<br>-Cheaper than OEM Glock mags
<br>-100% reliable with grass cased ammo
<br>-Lighter than Glock brand mags
<br>-Very unreliable with steel case ammo, rounds stick and will not feed, also very difficult to load with steel case too. I get probably 5 or 6 stoppages in 20 rounds. It usually requires removing the mag and smacking it against something to get the rounds to unstick.
<br>I will probably buy more, but with the awareness that steel case is a no go.



AWESOME MAGS!! The only issue i have with these mags is that i don't have more! Work perfectly in all my Glocks, and Glock mag running carbines.