Hello. To disassemble, I just did the following:
1. Push down the spring plug and rotate the bushing such that it can come out. It is spring-loaded so you know to be
cautious here.
2. Push the slide back until the shallow cresent cut on the slide's left side (opposite side from ejection port) is above the rearward portion of the slide stop lever. You will see where it needs to be. Push it up and out of the frame.
3. Push the slide/bbl off the front of the frame. Remove spring and guide rod.
4. Remove the bushing and slide the bbl out the muzzle end of the slide.
Best.