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Magpul PMAG 21 GL9 is a 21-round 9mm Glock magazine designed for double-stack Glock pistols, delivering reliable feeding and long-term durability through a proprietary all-polymer body. Built to meet 140mm competition magazine overall-length requirements, it provides added capacity without aftermarket extensions. Features include a high-visibility controlled-tilt follower, stainless steel spring, and easy-to-remove floorplate. Capacity windows and a paint-pen dot matrix for quick mag/load identification; flared, removable floorplate with ridged edges for grip and cleaning.
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