What is sr 25?

SR-25 is a semi-automatic rifle designed by Eugene Stoner and manufactured by Knight's Armament Company. It is a variant of the AR-10 rifle with improved accuracy and reliability. It uses a direct impingement gas system and fires the 7.62x51mm NATO round. It has a maximum effective range of over 800 meters and is commonly used by military and law enforcement snipers. The SR-25 has seen action in various conflicts around the world, including in Iraq and Afghanistan. It is also used by some civilian shooters for long-range shooting and hunting.