torpedo - submarine, bullet - ?

PISTOL
List of words for the clue torpedo - submarine, bullet - ? from the crossword:
BOW ARROW SONAR EBOAT UBOAT SUB HERO DELI WARSHIP SALAMI HOAGIE EAT HOAGY GRINDER ZEP WEDGE SPUCKIE BOMBER PITCH
WordClue
BOWtorpedo - submarine, arrow - ?
ARROWsubmarine - torpedo, bow - ?
BULLETsubmarine - torpedo, pistol - ?
PELLETbullet, gunstone
TORPEDOpistol - bullet, submarine - ?
WARSHIPcorvette or submarine
SUBMARINEbullet - pistol, torpedo - ?
BOWtorpedo - submarine, arrow - ?
HEATtorridity, warmth