US made from 6061 aluminum and had coat anodized black for a durable finish, these extensions add +3 for 9mm magazines and +2 for 40 caliber. They also feature ‘gill’ cuts to the sides of the extension to aid with grip and handling during use. These extensions do work with stock Glock magazine springs, but if you feel your springs are worn, we recommend using our enhanced power mag springs that are 10% stronger over the stock springs.
Compatible with Glock 19, 19x, 17, 22, 23, and 45 magazines.
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