Your right, I was mistaken about fenn owning a firespray. I got my hands on a copy of bounty unter, im bout to leave the prison level so the firespray scene is soon. It turns out though that there were other mando at the helm of firesprays. I found this lil bit of info, not sure how reliable it is...
Kuat Systems Engineering produced several prototypes shortly before the Battle of Naboo. However, all but one were destroyed when Jango Fett staged a prison break on Oovo IV. Jango kept the sole remaining Firespray, renaming it Slave I. Kuat Systems Engineering, suffering from the financial loss of the prototypes, eventually mothballed the project and concentrated instead on starship upgrades.
Many years later, K.S.E. found themselves on a more secure financial footing, and again desired to enter the starship market. The company then re-introduced the Firespray-class, hoping to build upon the reputation of the remaining prototype and its legendary pilot, Boba Fett.
The new Firesprays were, like the original prototypes, designated as patrol and attack ships and perfectly suited for law enforcement and interdiction missions. With Kuat Systems Engineering keen to expand the market for the ship, they had started to promote how easily the ship could be customized and upgraded to fulfill a myriad of roles.
At least ten were used by the Mandalorian Protectors during the Yuuzhan Vong War.