Aero Precision, Extended 2" SPR Ultralight Scope Mount, Fits Optics with 30mm Main Tubes, Anodized Finish, Flat Dark Earth NEW WARNING Warning WARNING WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. FDE Cerakote Finish 6061 T6 extruded aluminum construction 30mm Scope Ring Size 3.36oz Product Description The Ultralight 30mm SPR Scope Mount features a rear ring that is pushed forward 2", 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.