At a glance: Mounts sight to the receiver, reducing the overall height Reversible for custom optic placement in both forward and rear mounting positions Unique sight mount design allows for use with many different optics Mount a variety of popular optics and sights to your RugerA(R) MK SeriesA(R) with the brand new "Shadow" Mount V2.0! The "Shadow" Mount design mounts many optics straight to the RugerA(R) barrel - no need for a picatinny rail and clamp. Whether you're using a VortexA(R), TrijiconA(R), BurrisA(R), Holosun or another optic, the "Shadow" Mount V2.0 unique screw pattern will mount your Mfg: Tandemkross