Featuring a rigid, lightweight design, the Ultralight 34mm Extended Scope Mount features a rear ring that is pushed forward 1", resulting in better eye relief. This scope mount is designed to fit AR type upper receivers with Mil-Spec 1913 Picatinny rails and features a cross-slot keyway that offers excellent recoil protection. Ultralight Scope Mounts free you from unnecessary bulk, providing one of the lightest mounts in the industry. FEATURES Made In America Select Your Finish: Anodized Black or Magpul FDE Cerakote Material: 6061 T6 extruded aluminum construction Scope Ring Size: 34mm Scope Mount Profile: Extended Weight(s): 4 oz Designed for AR type upper receivers Screw Torque: 15 in-lbs