Add 5 Rounds to Your 9mm Magazine | GS Magazine Extension Installation
This guide details the installation of a Double Diamond +5/4 magazine extension for Glock 9mm and .40 Caliber magazines, as demonstrated by Lenny Magill of GlockStore. The process involves disassembling the standard magazine, modifying the magazine body slightly, and attaching the new extension with its included spring and hardware. This modification increases magazine capacity for enhanced readiness.













