The Mepro FUBS is a tritium-enhanced set of sights two tritium vials are firmly inserted in the rear sight, and one tritium vial is inserted in the front sight. In addition, the self-illuminated backup sights are designed to provide the shooter with secondary sights if the primary optics go down. The advanced Mepro FUBS sights are low-profile, 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). A spring-based locking mechanism allows you to flip them into place when needed quickly. The detent knob on the rear easily adjusts windage, and the front sight includes an Indexed, easy-to-adjust Elevation Drum. No tools are required for zeroing.

Brand	Meprolight USA
Category	Rifle Sights
Model	FUBS Self Illuminated Flip Backup Sights
Firearm Fit	AR-15
Color	Black
Frame Material	Polymer / Metal
Firearm Type	AR Platform
Mount Type	Picatinny Rail
Style	Flip Up Back Up Sight
Rear Color	Green Tritium
Windage Adjustment	0.43 MOA
Elevation Adjustment	26 MOA

Meprolight USA 404100 FUBS Self Illuminated Flip Backup Sights Black Green Tritium Front & Rear for AR-15