Trust me, go with the CGW pin. I've used both. The CZC pin gets deformed on the side that you bang on to install the pin. Yea the CGW pin settles sometimes to one side buts it's not going anywhere because of the trigger return spring riding in the thinner middle section. While you're at it you should order one of their trigger return springs as the factory return spring WILL break. 4 shots into a match and had 1 break!! Like others have said, the floating pin makes life a ton easier when you have to change a return spring.