Stuart Rawe's character of "Reg" is totally transformed in this episode. After spending several TV episodes and a movie - Housos vs Authority (2012) - as a guy who sits around laughing at people, suddenly "Reg" becomes a thug capable of belting young guys to the ground. Oddly enough, Stuart Rawe started out in Australian TV playing bit role thugs in TV dramas.
The jail that Franky, Dazza, Kevin and Reg are sent to is the old Parramatta, NSW jail.