I haven't made one yet, but I've had mine apart a bunch this week. with the slide off, pull the striker back just enough to engage the fpsb, then push the polymer firing pin case forward just enough to free the retainer on the back of the slide. Cover the back so the fpsb pivot pin doesn't eject itself, and push the firing pin to the rear. The firing pin and case will slide out of the slide. Don't play with the firing pin much or the pin holding the fpsb and the the tiny spring will fall out of the polymer case. Putting it back in is easy, I thought, until I concluded I've done something wrong on mine and can't figure it out.
I'll make a video when I understand more about what I'm doing.
Joe
