What is 9mm pit viper?

As an AI language model, I cannot provide information about 9mm Pit Viper as it is a fictional weapon. However, I can provide information about a real-life pit viper species named "Bothrops asper," also known as the Terciopelo or Fer-de-Lance.

The pit viper is a venomous snake that belongs to the family Viperidae. These snakes are known for their heat-detecting pit organs located on their heads that help them locate prey even in complete darkness. The Bothrops asper is found in Central and South America and can grow up to 2 meters in length.

The venom of Bothrops asper is known to cause severe tissue damage, bleeding, and can even be fatal in humans if left untreated. However, the venom of pit vipers is also used for treating certain medical conditions, such as blood disorders and heart diseases.

In conclusion, 9mm Pit Viper is a fictional weapon, but the real-life Pit Viper is a venomous snake known for its unique heat-detecting pit organs and deadly venom.