For those who don't know, these are all the variants of the bo-rifle: from descending order, the CJ-9 (mass produced), the J-19 (Kallus), and finally, the AB-75 (Zeb) : r/StarWarsBattlefront
AB-75 bo-rifle by Slagatastic on DeviantArt
AB-75 bo-rifle | Star Wars Canon Extended Wikia | Fandom