The Nocpix Extended Offset Picatinny Rail Mount adapts the SLIM optic to better fit bolt-action rifles, lever action rifles, and systems without an adjustable length of pull. This mount can also be quickly take off your rifle and moved to a new one with the optic attached.To install this mount, use a 3 mm hex tool to remove the mounting screws and the factory foot. This mount has four holes, providing three different mounting positions. Use the two original screws to mount the optic in the desired position. Make sure to allow for proper eye relief to prevent injury under recoil. Non-permanent threadlocker (such as Loctite Blue) may be used, but is not required. Do not exceed 18 in-lbs of torque.