TNTina's Ka-Boom Bow! is a Crossbow weapon available in Battle Royale with mechanics of an Explosive weapon.
TNTina's Ka-Boom Bow is a Mythic boss weapon given as a reward for defeating TNTina near The Rig. Only one can be found per match.
TNTina's Ka-Boom Bow works fairly similar to an ordinary Boom Bow, with the notable differences being the nerfed damage, charge rate and the mythic bonus of infinite charges/arrows. Instead of using Shells as its ammo, it uses it's own charges. They replenish through time up to 5 charges, similar to a Bandage Bazooka and the Creepin' Cardboard.
TNTina's Ka-Boom Bow also has a direct hit damage and a explosion damage, which deals 75 HP.