Shield Arms Glock 19/23 Magazine Extension +5/+4 9mm Luger/.40 S&W, Black - G19ME5BLK

This magazine extension is compatible with Glock 19 and Glock 23 magazines, adding 5 rounds to Glock 19 magazines and 4 rounds to Glock 23 magazines in 9mm Luger and .40 S&W calibers. Constructed from black anodized aluminum with a unique easy access floor plate design that allows quick access to the spring and follower without removing the extension from the magazine body. Includes a 100% lifetime warranty and Shield Arms Spring for Life guarantee.