Pretty simple. Clear the pistol, remove the slide. Looking down inside the pistol from the top move the release a little bit to see where it comes in the handle inside. You will see a long silver rod looking spring. Use a screw driver to push it to the side then toward the rear of the pistol. It will pop out of the release and the release can now be removed though the side of the pistol. To put it back in just reverse the release and the steps you followed to remove it.