The Osprey Compact 3-9x42 is the principal of the Osprey scope family. It has an unbelievable eye relief of 3-10 inches (at low power) revered by manufacturers the world over. The CP3-9x42 is the definition of tactical and ease of use with options like quick throw levers and bullet drop compensators. Can be mounted on anything with picatinny rails. Included with the scope are mounting rings, see through flip up dust covers, and backed by Osprey's industry leading no-nonsense lifetime warranty.