Kriss Magazine Extension Kit Converts GLOCK 21 Magazines to 30 Rounds ACMEK0800101

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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.

Specifications and Features:
Increased Capacity, 17 Additional Rounds
Secure Two Piece Extension
Extra Power Spring