I'm trying to swap my Stevens 200 from 223 to 243 and I have all the parts but one. Can someone link me the front bolt baffle for a 243? From what I can tell the bolt head for the 243 is longer than the one for the 223 and it won't let me eject a live round or fire it. I have found them on midway and brownells but I don't know which one it is. Any help would be much appreciated.

Thanks
Kyle