Taran Tactical Glock 21 +4 Magazine Extension

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This is the Taran Tactical Glock 21 magazine extension. This adds 4 rounds to your factory magazine. 

This Glock extension is manufactured from Taran Tactical's premium adonized aluminum, bringing G21 owners enhanced durability and capacity. Its extremely easy to detach with a one-piece design. Don't worry, there's no extra parts to misplace. Please note you will need a Glock magazine tool or similar tool to remove the factory base plate.

With the Glock 21 holding 13 rounds, this extension brings the total capacity to 17+1 - a substantial increase.

Double down on firepower and pick up a few today!


  • Glock 21 13 round factory magazine

Not Compatible:

  • 10 round or "blocked" Glock 21 magazines
  • Other Glock pistol magazines
  • Aftermarket Glock 21 magazines

Contents Include:

  • TTI +4 magazine extension (available in Black, Red)
  • Replacement spring - maintains same spring tension

Manufactured in the USA.

Taran Tactical Innovations
Glock 21
Required Magazine:
Glock 21 .45 ACP 13 round magazine
Plus 4

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