Unless you are actively learning primitive survival skills or studying bushcraft techniques, no one has any intention of deliberately putting themselves in a situation where they have no choice but to rely on their wilderness survival skills.
It is part of the sniper shooting system CheyTac LRRS. Produced by CheyTac LLC (USA). Uses special sniper cartridges of the Wildcat type: CheyTac and CheyTac. A distinctive feature of the system is the high accuracy of firing at long distances: