<b>Flip Up Sight 45 Degree Front Sight and Rear Sight is Rapid Transition.</b><p> <b>Two mode to aim as Front Sight has two Kinds of Reticle.</b><p> <b>Iron Sight is Aluminum-Alloy Construction. </b><p> <b>Specification:</b><p> Black Anodized Finish <p> 20mm Picatinny Weaver Rail <p> <b>Parameters:</b><p> Meterial:Aluminum-Alloy <p> Weight:4.1oz/116.2g <b>Box Include:</b><p> 1 x Front Sight <p> 1 x Rear Sight <p> 1 x Allen Wrench <p>