I just ordered a new barrel for mine after a similar mishap. The CZC extended barrel they use for the accu shadow fits. I believe it’s part number 30139. It’s just a touch longer than the AUS barrel (which should also work, but I can’t confirm.)
The only issues I had was that it didn’t require fitting, depending on the tolerances of your slide that may be an issue, for mine it just magically came out to the right size. They also remove some material where the guide rod comes in contact with the barrel, such that the little nub on the end becomes useless. This makes it tricky to get the guide rod into the hole on the slide, but once the slide is installed it seats properly on the frame.
