Answer:

gunsmith

AnswerCrossword Clue
GUNSMITHArms maker
GUNSMITHBarrel maker?
GUNSMITHPiece maker
GUNSMITHColt handler
GUNSMITHHe'll fix your Colt
GUNSMITHColt fixer
GUNSMITHBeretta mender