Sight mount for Aimpoint® CompM2 (M68 / CCO) / CompM3 Red Dot Reflex Sights. RAS II CompatibleLower 3rd Co-witness: Front sight post tip in lower 3rd of sight picture. General Features: For use with Aimpoint® CompM2 (M68 / CCO) / CompM3 Red Dot Reflex Sights Retains Zero under extensive live fire usage and while subjected to harsh mechanical stresses: .01 MOAReturns to Zero following repeated removal-remount cycles during extensive live fire usage: Value: .01 MOA [Lab Tested] < .20 MOA [Live Fire] Adjustable to Out-of-Spec / Worn M1913 Picatinny Rails Auto-Locking Quick Detach™ (ALQD™) Lever SystemNon-Abrading / Gouging Picatinny Rail Lockdown Feature GDI CMC2-OSM Optical Sight Mount CMC2M