Kriss Glock 21 +17rd Magazine Extension Kits

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0.33 LBS

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The& Kriss Glock 21, 21SF magazine extension kit will add +17 rounds to your factory Glock magazine. The extension consists of a sleeve, base plate and extended magazine spring. The factory follower is used with this extension kit. The back of the base pad extension has round count witness holes to keep track of your ammo. This kit works best with newer magazine bodies, pre-ban magazines may have reliability issues.

  • Increased Capacity, 17 Additional Rounds
  • Secure Two-Piece Extension
  • Extra Power Spring

WARNING This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to (California law requires this warning to be given to customers in the State of California.)

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