Arredondo Checkered Mag Extensions fits G20/21

(1 review)
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Arredondo checkered magazine extension fits Pre Ban Hi-Capacity FML (Full Metal Lined) and NFML (Non Full Metal Lined)Glock magazines. Virtually unbreakable and extremely secure. Easily installed or removed with supplied U tool. You are purchasing a complete kit which includes: Extra power spring, take down tool, extension sleeve and base pad. Adds the following round count:

+6 for Glock 9mm
+5 for Glock 40 S&W
+5 for Glock 357 Sig
+5 for Glock 10 mm
+4 for Glock 45 ACP
+3 for Glock 38 45 GAP
*USPSA Limited Class Legal! Extends magazines to 140mm.


  • 5
    Outstanding Reliability and Performance

    Posted by Mark on 31st Jan 2022

    For the Glock 20 or 29 with a 15-round OEM magazine, these offer a 20-round capacity with no reduction of reliability or performance using either 10 mm or 9x25 Dillon ammunition. First rate equipment; highly recommended.