The Arredondo Glock Mag Extension increases the capacity of your Glock magazines (+6 for 9mm, +5 for .40 S&W, +4 for .45 ACP/10mm). Comes with extended 10% magazine spring and dissasembly tool. Watch the installation video to fully understand how this item fits and functions.
USPSA limited 140mm length legal
Magazine not included
Will not function in post-ban, 10 round magazines
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