The Daniel Defense 1 Oclock Offset Rail is optimized for mounting miniature optics in the 1 Oclock (right-hand) or 11 Oclock (left-hand) positions for quick, non-magnified, transitions when employing magnified primary optics on rifles with the SLiM Rail or any other KeyMod rail system. The geometry allows for zero cheek-weld shift during the transition. This facilitates very fast transitions from magnified to non-magnified optics, and back. The 1 Oclock Offset Rail can also be used to mount a variety of lights or other accessories that mount to a MIL-STD-1913 rail. By flipping the part upside-down, one can mount a light in a good position for use with a vertical foregrip. All Daniel Defense Rails are built to the 1913 Military Specification and are 100% Quality Assurance checked for conformity to the specification.Made in the USAFeatures:- Optimized for Miniature Optics- Zero Change in cheek weld for transitions- Super-Fast Transitions- Adaptable for other uses- LightweightMaterials:- Aircraft Grade 6061-T6 Aluminum- Military Specification Type III Hard Coat AnodizedSpecifications:- Weight: 1.2 oz- Color: Black