Brand new, never mounted or used. This Daniel Defense 1 O’clock Offset Rail is optimized for mounting miniature optics in the 1 O’clock (right-hand) or 11 O’clock (left-hand) positions for quick, non-magnified, transitions when employing magnified primary optics on rifles. Compatible with the SLiM Rail or any other KeyMod rail system. Compatible with 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. Weighs only 1.2oz. Aircraft Grade 6061-T6 Aluminum Military Specification Type III Hard Coat Anodized Built to the 1913 Military Specification Made in the USA! $40 local pickup cash. I could be persuaded to ship it if the buyer covers the cost.