Answer: brassknuckles

AnswerCrossword Clue
BRASSKNUCKLES

Street tough's weapon

BRASSKNUCKLES

Weapon used by hired muscle

BRASSKNUCKLES

Illegal punch enhancers, in boxing

BRASSKNUCKLES
Hand-y weapon
BRASSKNUCKLES
Dangerous 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