SMART REST - Weaver Rail + Screws - SKU: SRWR The new Weaver Rail is now upgraded and improved. Upgrades include: - Slightly longer - Now measures 79mm in total length with the cross rails measuring 45mm - New screw styles - There are two ways to mount the rail: 1st Option: Screw Clamp: This allows the user to mount the rail using the existing sling stud that is on the rifle. It's a simple sidelock pin, that locks into the stud, then allows you to fasten the rail down on that as an anchor point 2cnd Option: Direct Screw: Screw directly into the stock. Simply remove the sling screw and fasten the rail directly with the screw. This will only work if the rifle features a T nut as standard issue. If it does not have a T nut, but you wish to use this method, you can purchase a T nut from Eagleye and install yourself or get a Smith to do it Use the SmartRest Weaver rail for the Hyper Pod or Bi-Pod. or Torches, including Wolf Eyes, Led Lenser and O Light.