QD Riser base for Picatinny Rail. Fits existing Weaver base or Picatinny rail.  Device measures  2 1/4 inches long (15mm high) providing ample surface for Red Dot scopes, Holographic sights, lasers, lights, etc.  Horizontal Quick Detach lever lets you mount or remove the sight with the swing of a lever.  Milled from high strength aluminum alloy and steel.  Finished in matte black with moving parts weighs 4.2 ounces. NIB FREE SHIPPING to lower 48