Magpul PMAG 21-Round GL9 9mm Magazine for GLOCK 17 - Black

Manufactured by Magpul Industries
Manufactured by Magpul Industries
6 Reviews

In Stock

NOTE: Limit 10 per household. Quantities exceeding 10 will not allow checkout.

Standard orders will be shipped within the same business day. FFL orders will ship within 2 business days or less as long as we have the information for the transfer destination. Priority shipping methods like Overnight Delivery, Air Delivery, 2nd Day Delivery, or 3 Day delivery do not include Saturday or Sunday as delivery days.

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 9mm handgun magazine for Glock 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
See More


Caliber Gauge9mm Luger
Magazine Capacity21
Manufacturer.Magpul Industries
PlatformGlock Magazines

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see

Ratings & Reviews

6 reviews

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



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.

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.

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.

Works for my Ruger 9mm Carbine, no issues!

by -

I just got a Ruger 9mm PC Carbine and needed "Glock" magazines, didn't realize when buying two that they are Magpul... but the price was right, and my PMags are my favorite in my AR. And it works just fine! The 21 round magazine is a nice length for the Ruger 9PCC, no failures so far.

Primary Arms

by -

These are P-mags, do they really need to be reviewed? I just wanted to say a word about Primary Arms, these guys are the shiznit! Ordered yesterday, received today! This is a great Texas company! Ordered after lunch and they still shipped them out same day. Great service guys! keep it up!

Just as Good as the OEM Product

by -

The MAGPUL PMAG 21-ROUND GL9 9MM MAGAZINE FOR GLOCK 17 - BLACK work great in my FM AR9 Pistol. They’re just as good as the Glock OEM magazines at a fraction of the price.