FAB Defense FXFRBS Front/Rear Folding Back-Up Sights
Low-profile folding front and rear sights for AR-15/M4/M16 platforms. Dual aperture rear sight (3mm and 1.5mm) mounts on Picatinny rails. Black polymer and metal construction.
FAB Defense Front and Rear Folding Back-Up Sights
These auxiliary sights represent a practical solution for shooters who want reliable backup aiming capability on their AR-platform rifles.
Front Sight Features
- Low-profile design mounts on any 1913 Picatinny rail
- Ergonomic angle-wing-shaped front shroud aids sight picture alignment
- Durable polymer and metal construction
- Functions as primary or backup sight
- Compact profile doesn't interfere with optics
Rear Sight Features
- Dual aperture system for tactical flexibility:
- 3mm aperture: Extended eye relief, ideal for low-light conditions and rapid target acquisition
- 1.5mm aperture: Shorter eye relief for enhanced accuracy at distance
- Instantly selectable apertures to match shooting conditions
- Ergonomic design works seamlessly with front sight geometry
- Low-profile folding mechanism for streamlined profile
Platform Compatibility
Designed specifically for M4, AR-15, and M16 platforms. Mounts directly to standard Picatinny rails without additional adapters.
Why These Sights Matter
In the field, optics fail. These sights ensure you maintain combat-effective accuracy when your primary aiming system goes down. The dual aperture rear sight is particularly valuable—it lets you adapt your sight picture to changing light conditions without fumbling with adjustments.
