Update
Ok, a little update. I went ahead and cut the barrel off. I'll try to get pictures for the cut and everything later. I forgot to take pictures of the process but honestly it seemed really easy. First thing I did was measured 18.5" from the breakface, marked it, & remeasured it. Took a pipe cutter and ran it a few times around the barrel to scar the surface. Remeasured it. Then took a small piece of masking tape about 3/4"-1" wide and laid it next to the scored mark on the barrel. Lined up a "push punch" with the existing front sight bead (I eye balled it but it's really close). Made a nice indent. Then using a front sight kit I bought at Brownells for under $13 (came with a drill bit, tap and two front sights) I drilled the front sight hole, then tapped it and ran the front sight in to make sure it fit. Took the front sight back out. Removed the masking tape and cut the barrel off at the scarred 18.5" mark. Remeasured a last time. Filed the end of the barrel and inside to clean it up front the pipe cutter. Reinstalled the front sight and looked down the barrel to see it protruded into the barrel. Took the front sight back out and used a hand sander with 80 grit paper to remove material. I did it in increments to make sure I didn't remove to much. When I felt comfortable with it no longer protruding into the barrel I took it out, put a bit of blue lock tight on it and put it back in as tight as I could. Put some masking tape inside the barrel and around the outside so just the fresh cut metal was showing. Spray painted it flat black to keep it from rusting. All in all I'm really happy with it however the two bead sights I got in the kit were bigger then the bead on it originally. I guess it was a 12 gauge kit? Idk but worth it for 30 mins of work and $13 dollars.