Fire Release: Flame Bullet

This technique is executed by the user gathering oil in their mouth which is created by chakra, spitting it out, and igniting it. This technique simply shoots a flame bullet at the enemy. If the amount of oil that is prepared is kept down, the time it takes to invoke the technique is reduced. This allows the enemy to be stricken unaware, allowing the oil-containing flame bullet to burn them up completely. It is also possible to shoot out a series of flame bullets by partitioning the oil, or a continuous flamethrower. If this technique is fired after covering the enemy with oil using the Toad Oil Bullet, it has the power to wound or kill. This also keeps down the consumption of chakra.

There is a bigger version, augmented with senjutsu chakra, called the Fire Release: Big Flame Bullet technique.

Reference
es:Elemento Fuego: Bala de Fuego