Taking the slide off only requires the removal of one pin and that comes out easily. I left the barrel on and put blue painters tape over everything that I didn't want polishing chunks to get into.The thought of hammering away on my gun to tear it down disturbs me, I spray gun scrubber in it after a good bore cleaning.
I think in another thread someone mentioned that they did it by hand using fine grit sandpaper.Is there a way to polish the ramp without using a dremel?