The FAB Defense FRBS front and rear flip-up sight set provides a low-profile auxiliary sighting solution for AR-platform rifles. The set is designed to mount quickly to any 1913 Picatinny rail and may be used as either primary or backup sights. Construction combines high-grade polymer and metal with a spring-lockable deployment system and tool-less windage/elevation adjustments for field convenience.
Key Specifications
- The set includes front and rear folding sights suitable for auxiliary or primary use.
- The sights mount to any 1913 Picatinny rail for straightforward installation on compatible rifles.
- The rear sight features dual apertures (3mm and 1.5mm) to accommodate different engagement and lighting conditions.
- The deployment system uses an instant spring-lockable mechanism to hold sights in the deployed position.
- Windage and elevation use tool-less adjustments with positive detent locking.
- The folded profile is designed to be low and snag-resistant when stowed.
- Materials combine polymer and metal for durability and weight control.
- The finish is black to match standard AR-platform accessory finishes.
- The sights are specified to fit AR-15, M4, and M16 platforms.
- The front sight includes an ergonomic shroud intended to help center the sight picture.
The FRBS sight set offers a practical, durable option for shooters seeking a compact, tool-free backup or primary iron sight solution for AR-pattern rifles. Its combination of polymer and metal construction, positive detents, and dual-aperture rear sight make it adaptable to a range of light and engagement conditions while keeping a minimal folded footprint on the rail.
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