These glock heavy base plate magazine extenders ensure a quick release when time and reliability are of the essence. JWH Custom extended aluminum magazine base plates are machined in the USA and are made of T6 aluminum. Hard coat anodized. These are solid pieces, and do not add any additional rounds. Extended base plates weigh 39.5 grams (approx. 1.4oz) compared to 3.5 grams (approx. 0.1375 oz) of the factory original plastic base plate. This added weight helps ensure a faster and more consistently drop every time. Available in 9mm .40 cal and 357 sizes to fit all Glocks pistols except the G36.
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