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Blueline Mag Extension for Smith & Wesson M&P 9mm / 40 S&W
Our latest design keeps true to our “Blueline” design philosophy with extending the magazine capacity while featuring our patent pending indexing feature. The sides are serrated for easy grabbing from a magazine pouch or pulling the magazine out of the pistol during an emergency.
This Blueline for the Smith & Wesson M&P 9mm / 40S&W extends the capacity to 20 + 1 in 9mm and 18 + 1 in 40 S&W.
(Stock magazine floor-plate is NOT used)