SV-300 (Catonyese: Snayperskoye vintovka, "Rifle of the sniper") is a precision bolt-action sniper rifle for dedicated use by marksmen. Purpose-built for precision and durability in all operating conditions, the SV-300 is one of the most accurate, precise firearms available, in addition to having high power and the ability to equip it with enhancement modifications. SV-300 is available in the 7.62x51mm SATO or 7.62x54mm calibers, the first use of the 7.62x54mm round in a modern Catonyese weapon. Development began after taking delivery of SV-103 sniper rifles from Mersiva. These sniper rifles were purchased for special forces and were positively recieved by these units, but the rifles could not be purchased in large quantity due to procurement cost. Catonya Defense Forces sought a domestically produced marksman rifle that had a longer range and better suited ergonomics than the DMRs that most units recieved such as the SV-95M. SV-300 is now equipped with most regular infantry units and supplements DMRs for the marksmen in some squads or sniper teams.