XD 9 9MM CONVERSION BARREL ?

[SUPER X]

Xd 9, 4 inch. 40 S&W. TO 9mm factory barrel ? This looks to be a 40sw to 9mm conversion barrel.
The only barrels I see With the shoulder in front of the chamber are conversion barrels. It looks to be a factory barrel with the common xd markings on the chamber facing extraction port.
Anyone know for sure. ?

Thanks

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