From the card:
Weapon - Personal - Rifle
Fett may fire this weapon twice per battle. When Fett fires this weapon, it is 1 to hit. When this weapon is under Fett, if he is hit but has not fired a weapon in this battle, he may fire this weapon one before he is discarded.
Most of the time, when Boba Fett is pursuing the target of a bounty, disintegrations are perfectly acceptable.