The LEAP 02 mount by Scalarworks is the lightest, strongest and most compact quick-detach mount for the Aimpoint Pro optic. The ClickDrive(TM) system by Scalarworks ensures a hold and return to zero in any condition and the thumbscrew allows for quickly and easily detach and reattach the optic. Reflex Optic Sight Compatibility: Aimpoint PRO optic (12841) Specifications Materials: 7075-T6 Aluminum / 4140H Steel Finishes: Type III Anodizing / Flash Nitride Center height over rail: 1.57" (40mm) Co-Witness: Lower-Third Weight: 9.85oz Origin: USA Rails: MIL-STD-1913 Picatinny Includes: Scalarworks(R) Leap(TM) (SW0210) mount, #10-32 shoulder screws Nylok(R) treated (@ 20in*lbs), T25 Torx driver bit and instruction manual.