I tried to unscrew the front bead on a remington 870 so I could properly install the Hi-Viz set which actually sucks which I know because I tried them out and they are terrible. I was able to try them because of an adhesive on the bottom of the HiViz front sight. They are plastic fiber optic sights you attach to a shotgun. I like some fiber optic sights like ones that come on a barrel originally, but with the HiViz it is hard to tell where your virtual crosshairs are lining up. Anyway I was twisting with a pair of pliers and the bead was twisting, but not coming out. Yes I was turning to the left. Now I want to get the bead out and put another in because I chewed it up pretty good on behalf of the HiViz. How do I get the bead out and another one in? I removed some of the matte or bluing or whatever it is toward the front of the barrel while I was attempting to unscew the bead. Can I paint on bluing or matte? Is there gun paint? I don't want the barrel to get rusty up there.