Find it here - https://doublemdefense.com/product/magpul-mag661-blk-pmag-21-gl9-9mm-glk/

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Factory New.

UPC: 840815109709

SKU: MAG661

Item Description:

The 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.

Item Specifications:

  • 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 for corrosion resistance
  • Flared, easily removable floorplate
  • 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