NOTE: This is the mount only. No RMR or any other sight is included.This rock solid RMR mount brings ultimate functionality to the Tactical One-Piece Scope Mount. This item mounts via our patent pending dual taper mounting point on the top of the scope cap delivering the most secure attachment possible. Useful for items ranging from levels and dope cards to red dots and weapons-mounted laser range finders. The durability and rigidity of this piece are the best in class making your return to zero that much better. .875a ^2 tall 1.69a ^2 from the top of tube to RMR mount 1.5oz including all hardware Type III Hardcoat Black anodized Captive mounting screws CNC Milled in America from American 7075 AluminumCompatible with all optics using RMR footprint: Trijicon RMR Trijicon RMR HD Trijicon RCR Trijicon SRO Holosun HS407C Holosun HS507C Holosun HS508T NcStar VISM FlipDot Pro Riton X3 Tactix PRD Swampox Kingslayer Swampfox Liberty RMR 1A-22 Swampfox Justice RMR 1A-27 Vector Optics Frenzy 1x22x26