Fx liner is it normal ?

If the picture is taken from the breach end (the end with the ring on the outside of the liner) it is normal. Look the same on mine.

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Everything is fine here.

It a part of the manufacturing process where it appears they cut the breech into the barrel. Mine isn't quite like this because I "worked on it" with some paper and polished out the barrel. Your transition could be a bit nicer, (meaning a less abrupt change when leading into the rifling), but it is not going to hurt accuracy.