Meprolight USA 403240 FUBS Self Illuminated Flip Backup Sights Black Orange Front Sight Green Rear Sight for AR15

The Mepro FUBS is a tritiumenhanced set of sights four tritium vials are firmly inserted in the rear sight and one tritium vial is inserted in the front sight. In addition the selfilluminated backup sights are designed to provide the shooter with secondary sights if the primary optics go down. The advanced Mepro FUBS sights are lowprofile made of strong composite material and are highly durable. Quickly and easily flip them into position when needed. Sight pin elevation is easily adjusted without tools. You can also use it as primary sight. The Mepro FUBS sights are mounted to any Picatinny rail using a 2.5mm Hex key provided. The detent knob on the rear easily adjusts windage and the front sight includes an Indexed easytoadjust Elevation Drum. No tools are required for zeroing.