So, a bull barrel is another kettle of fish entirely. You can still take it down without tools, though.
1) Line your slide up with the disassembly mark, and while holding the slide in place with one hand remove the slide stop with the other.
2) Move the slide assembly forward ofc the frame.
Now, reassembly I find goes much easier with a specialized tool, as shown in the following two photos. This special tool grabs hold of the guide and secures it in place so that there is no spring tension on the barrel lug during reassembly.
View attachment 1741845
View attachment 1741846
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