Now, a proper fix for the hard to use factory Gen 4 Glock magazine release! The Vickers Generation 4 Tactical Extended Release is easy to install and made of the same tough polymer as the factory part. Now anyone with average- to small-size hands can release the magazine rapidly without shifting their grip on the weapon.

Fits Glock Gen 4 models 17, 19, 22, 23, 26, 27, 31, 34 and 35. 

Link to parts manufacturer