This guide details the installation of the Arredondo Mag Extension for Glock magazines, as demonstrated by Lenny Magill from GlockStore. The process involves disassembling the standard Glock magazine and reassembling it with the new components. The extension significantly increases magazine capacity, adding +6 rounds for 9mm and +5 rounds for .40 S&W/.357 SIG. The video provides clear, step-by-step instructions suitable for intermediate users.
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