HK Licensed optic mount for Trijicon MRO Optics – made by Kinetic Development Group. The Sidelok cam system locks the mount down onto picatinny without the need of tools, side levers, or huge knobs. The release system allows users to change out there optics on the fly with less hassle. The 2 levels of locks (MRO Mount) ensure the optic will not move unintentionally, maintaining zero for the shooter, and returning to zero when remounting in same position after removal. This mount utilizes a lower 1/3 co-witness. Height (From top of Picatinny Rail). Length: Base – 2.25? Weight: 2.9 ounces (7.0 ounces total with optic attached). Features: Lower 1/3 Co-witness. Compatibility: Trijicon MRO Red Dot Optic.