I am wanting to trade my FX Impact .22/700mm barrel for a .22/600mm barrel. I was told this one has the slug liner A installed with the carbon sleeve and there is an extra pellet liner. Gun was purchased Jan 2020 and was told the pellet liner is the one that came with the gun. The reason I want to trade is I would like to leave my moderator on when I put the gun in the case instead of removing it every time. You can see the barrel shows signs of normal use but it shoots good. If you only have one liner I would prefer a pellet liner ( I don’t shoot heavy slugs) and I will let you choose which you want from me.