The LEAP 04 mount by Scalarworks is the lightest, strongest and most compact quick-detach mount for the Trijicon RMR, SRO and Holosun 507C optics. 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 Trijicon: RM01, RM02, RM03, RM04, RM05, RM06, RM07, RM08, RM09, SRO1, SRO2, SRO3 Holosun: 507C, 508 Specifications Materials: 7075-T6 Aluminum / 4140H Steel Finishes: Type III Anodizing / Flash Nitride Center height over rail: 1.57" Co-Witness: Lower-Third Weight: 1.59oz Origin: USA Rails: MIL-STD-1913 Picatinny Includes: Scalarworks(R) Leap(TM) (SW0410) mount, #6-32x0.4375" Nylok(R) treated fasteners, T10 Torx driver bit driver and instruction manual. The optics bundle includes all of this plus the Trijicon RMR OR Holosun 507C-X2 optic.