20MOA 1/2 Half Inch Riser Rail Scope Mount Picatinny 2 Inch Forward Cantilever Features: A quick mount multi-slot 1/2 inch riser mount with 20moa elevation built-in to raise the line of sight by 1/2 inch. Machined from heavy-duty extruded aluminum alloy 6061. Locks firmly in place with two easy-to-tighten carbon steel Allen screws. 16 ring slots and 2-inch forward extending length for more choices of sight placement, which is very helpful for use with full-size rifle scopes. Anodized in matte black finish Compatible with Picatinny or Weaver rings Overall length: 7(178mm) Weight: 5.4oz Package contents: X1 1/2 Half Inch Riser Rail Scope Mount