Add more firepower to your Glock 43 pistol with this FAB Defense +4 Magazine Extension. This extension replaces the existing floor-plate of the factory magazine for the Glock 43 and adds 4 rounds for a total of 10 rounds in one clip. This Magazine Extension has a special ergonomic design that enables manipulation of the magazine and allows you to have a full grip on the weapon when the magazine is in use. Features: a +4 rounds for a total of 10 rounds a Enables a full grip on the handgun a Contoured finger indents for a firm grip a Innovative spring plate allows the use of the original magazine spring