FAB Defense AR Flip-Up Front and Rear Backup Sight Set – Black

Upgrade your AR-15, M4, or M16 with the FAB Defense Flip-Up Front and Rear Backup Sight Set (BUIS) in black — a precision-engineered sighting solution built for serious shooters who demand reliability and speed. This matched set pairs the FAB Defense front sight with the advanced RBS dual-aperture rear sight, creating a precise optical tunnel that delivers faster target acquisition and more accurate aiming in any conditions.

The rear sight (RBS) mounts effortlessly on any standard 1913 Picatinny rail and offers tool-free windage adjustment for quick field corrections. The front sight’s ergonomic angel-wing-shaped shroud helps naturally center your sight picture, whether used with the included rear or any compatible rear sight. Both sights fold flat to a smooth, low-profile position that won’t snag on gear, webbing, or brush — and when you need them, an instant spring-locked deployment mechanism snaps them up instantly without slipping, breaking, or deforming over time.

Key Features:
• Matched front and rear flip-up BUIS set optimized for AR-15 / M4 / M16 platforms
• Dual-aperture rear sight for versatile aiming at varying distances
• Tool-free windage adjustment with positive detent locking
• Tool-free elevation adjustment with positive detent locking on the front sight
• Instant spring-loaded deployment — no slip, no play, no failure
• Ultra-low folded profile — snag-free on gear and brush
• Compatible with any standard 1913 Picatinny rail
• Also compatible with the FAB Defense K.P.O.S. platform
• Constructed from high-grade polymer and metal for maximum durability
• Functions as primary or backup sighting system
• Matte black finish

Whether you’re building a duty carbine, a home defense rifle, or a precision range setup, the FAB Defense flip-up sight set delivers dependable performance at a competitive price. Order online today at VanTon Arms and enjoy fast nationwide shipping.