How do you disassemble a smith Wesson model 645?

Answer 1

To field strip any of them, pull back and hold the slide in a pinching motion so that the slide stop notch is centered over the front rounded portion of the slide stop. Then push out the slide stop from right to left. Sometimes you may need to give the end of the shaft a little rap with the butt end of a screwdriver or similar non-marring object. When the slide stop is out, ease the slide, barrel and recoil spring - which remain together - off the front of the frame, then pull out the recoil spring/guide rod and barrel from the bottom of the slide, moving them to the rear. Take note of the little half-moon-shaped cutout in the barrel where the guide rod's flanged end sits. When reassembling, you have to push down the ejector/magazine safety actuator and the firing pin block levers before the slide will go all the way on.