Raise your line of sight by 1/2" without adding extra weight to your firearm. This 16-ring Rail Scope Mount attaches to a flat top Picatinny rail with two easy-to-tighten carbon steel Allen screw. The 16 ring slots and 2" forward extended length allow you to adjust for the most preferred sight placement, which is helpful with full size rifle scopes. It's constructed of aluminum alloy 6061 for strength and durability and it's finished in anodized matte black. It can use either standard Picatinny or Weaver rings.