Shield Arms G19ME5BLK Magazine Extension +5 Extended 9mm Luger/40 S&W 5rd Compatible w/Glock 19/23 Black Anodized Aluminum

The Shield Arms Glock 19/23 Magazine Extension adds 5 rounds to your Glock 19 magazine and 4 rounds to your Glock 23 magazine. Shield Arm’s unique easy access floor plate design allows you to quickly access the spring and follower without having to remove the extension from the magazine body.