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Two-piece synthetic base pad increases the cartridge capacity of Glock magazines. Locks securely to the magazine body and can be removed quickly with the supplied compression tool. Includes a Wolff 10% extra power spring for reliable feeding. Checkered bottom panel for positive, non-slip mag changes. USPSA Limited legal. Adds +4 rounds to 9mm and +3 rounds to pre-ban mag capacity for .40 S&W. Manufactured by Arredondo.
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