The MCKFBUS Front Flip Back Up Sight is an adjustable connection point for the Picatinny rail. The front sight is planned particularly for the center poster to help elevation with no additional tools required. MCKFBUS Front Flip Back Up Sight is focused on the operator’s eye sight for targeting. – No additional tools needed for adjustment – Manufactured from Polymer to reduce weight – Spring loaded push button made to raise the sight accessed ambidextrously – Mounts securely to any Picatinny – Center Post adjustment locks at quarter turns with a secure locked pin