I have a Serbu. I take it out every month or so. I have found that the bars on mine are slightly bent. I wouldn't be suppriesd if a straight forend will bend the bars eventually.
As far as the breacher and shell holder, it'll be your gun and you can hang whatever you want off of it.
"No, it's not a silencer. This little doodad is my own invention. I call it a loudener." --Sledge Hammer