This offset 45degree side rail is optimized for mounting miniature red dot optics in the 1:30 O¨clock (right-hand) or 10:30 O¨clock (left-hand) positions for quick, non-magnified, transitions when employing magnified primary optics on rifles with MIL-STD-1913 rails. The geometry allows for minimized cheek-weld shift during the transition. This facilitates very fast transitions from magnified to non-magnified optics, and back. The offset rail can also be used to mount a variety of lights or other accessories. By flipping the part upside-down, one can mount a flashlight in a good front position underneath quad rail forend for use with a vertical foregrip and turn on/off the flashlight by thumb pressing tail cap switch
，Optimized for Miniature Red Dot Optics
， Minimized cheek-weld shift for fast transitions
，Also great for mount other accessories such as flashlighgt, laser sight etc..
，Machined from Aircraft Grade 6061 Aluminum Alloy
，Matte Black Anodized Finish
， Crosscut Slots on the 45degree 1 3/4inch Side Rail
， Large thumb screw is very easy to tighten.