How do you disassemble a S and W 4513?

To disassemble a Smith & Wesson 4513, first ensure the firearm is unloaded by removing the magazine and checking the chamber. Next, pull the slide back slightly to align the slide stop with the notch, then push the slide stop out from the right side. Once the slide stop is removed, carefully slide the upper assembly forward off the frame, and then you can further disassemble the slide by removing the recoil spring and barrel. Always refer to the manufacturer's manual for specific instructions and safety precautions.