Answer: brassknuckles

AnswerCrossword Clue
BRASSKNUCKLESStreet tough's weapon
BRASSKNUCKLESWeapon used by hired muscle
BRASSKNUCKLESIllegal punch enhancers, in boxing
BRASSKNUCKLESHand-y weapon
BRASSKNUCKLESDangerous band?
BRASSKNUCKLESSpare parts for a robot?
BRASSKNUCKLESHand weapons
BRASSKNUCKLESThug's weapon
BRASSKNUCKLESPersuaders of a sort
BRASSKNUCKLESWeapons in fisticuffs
BRASSKNUCKLES"Sonic the Hedgehog" character, showing chutzpah
BRASSKNUCKLESWeapon that gives a punch more punch
BRASSKNUCKLESGoon's blow-enhancers
BRASSKNUCKLESHandy weapon?
BRASSKNUCKLESJaw breaker