It's a Vortex Strike Eagle 5-25x56 FFP EBR-7C (MOA). I mounted the 10 inch arca rail myself. Nice and stable.Beautiful Rifle, like the bi pod too......what kind of optic is on top? , for my .300WM i am considering a new Vortex Viper Gen II FFP with the EBR7C reticle , but cant decide MOA or MRAD.