You do NOT need a press.....
You do NOT need to send it out to some expert that won't do anything to it that you can't do yourself.
A big bench vise makes it easier but you can get away without one. If you have a vise, remove the barrel and clamp the breech block in and simply pull or push the barrel in the direction it needs to go. Check it by eye until it looks straight relative to the breech block.
If you don't have a vise you can stick it in a receiver hitch on a truck padded with a piece of PVC pipe slipped over the barrel and do the same thing. Along with several other ways to do it and accomplish the same thing.
It will move easily, obviously, since that's how it got bent in the first place. The barrel won't kink or fold up or do anything crazy, it will just bend in a gradual bend and you won't even be able to notice it's happened when you are done.
I've done a ton of these on Weihrauchs, BSAs, Feinwerkbaus, Webleys, both breakbarrels and underlevers and every single one shot better and in the direction it was supposed to. It takes very little time, skill or effort and you'll never need to worry about goofy mounts or scopes running out of adjustment again.