PWC - RETARD QUESTION

GCI has this build tagged as a 9mm model. However, in the build doc, I only see references to 5.7. So does this model support 9mm ? or maybe the 9mm tag is a product of a GCI bug ?

https://guncadindex.com/detail/Unseenkiller---PWC-Full-Retard-Edition:6

https://odysee.com/@unseenkiller:d/Unseenkiller---PWC-Full-Retard-Edition:6