Originally Posted by Jim K
If it is like the Russian, that is a split pin; it has to be pushed out by a special "V" cut tool that will squeeze the ends together. It is inserted from the left and pushed out from the right.
I say "pushed" rather than driven, as it is a fairly loose fit, held by the ends of the spring arms, not friction. Attempting to drive it out using a conventional punch will either break the pin or damage the slide.
Yes the old one is already broken out, that is why I am replacing it. When you insert in from the "left", is that the side of the gun that has the controls on it, like the safety and mag release, or do I insert the pin on the side when the spent casings eject?