Anyone tried these bushless moderators? My new rifle has a fluted barrel and I've been advised against an over barrel design mod as the fluting will slowly cut away the bush. I know there are some very short end of barrel mods available but I think they look a bit out of proportion. These were advertised in a magazine and although I'm sure there are down sides to them, has anyone got any experience with them? Failing this it looks like I'll be going for an ASE mod.