Tec-9 is a pistol used by Terrorists. It is a semi-automatic weapon with a high rate of fire and low accuracy. This pistol has been painted using a hydrographic in the form of groundwater. Exchange your Soul Gems for the Groundwater Tec-9. The Tec-9 is a semi-automatic pistol created by a Swedish company called Interdynamic AB, commonly known as Intratec. It was made in 1984 and the production of the weapon ended in 1997. Today, it is used for self-defense, recreation and sport shooting. The Tec-9 Groundwater is the first skin of the "Groundwater" series, which features weapons with animated water drops on them. Exchange your Soul Gems for this skin! Tec-9 is a powerful, yet cheap pistol. It was painted using a digital camouflage pattern of Groundwater as a template. Exchange your Soul Gems for the Tec-9 Groundwater.