But just to make sure this feature worked, I did the change-over myself a few times. It was easily done. First, I removed the magazine and made sure the pistol was unloaded. Then, I gave the half-moon shaped frame tool at the bottom and very rear of the mag well a ¼ turn, and pulled it straight out. At this point, the existing palm swell was easily removed and a new one popped into place. The frame tool was reinserted, and I was ready to shoot.