FAB Defense Front Back-Up Sight

Your Price: £38.99
Out of Stock.
Part Number:P02 - FBS

FBS is an advanced, low-profile, durable, auxiliary front sight. It can be used with any rear sight, but has been designed to provide an extreme optical advantage when paired with the FAB Defense® RBS Rear Back-up Sight. Sight pin elevation is easily and quickly adjusted without tools.


FBS is readily mounted on any 1913 Picatinny rail, making it ideal for use on M4 / AR-15 / M-16 platforms and on the FAB Defense® KPOS.



Can be used as a primary or back-up sight

Ergonomic angel-wing-shaped front shroud helps center the image with any rear sight, but when used with a matching FAB Defense®  RBS Rear Back-up Sight, it creates a precise optical tunnel that ensures more accurate aiming and faster target acquisition

Low folded profile is smooth and inconspicuous, and will not snag on gear, webbing, or brush

Instant spring-locked deployment mechanism will not slip, break or deform

No tools needed for easy, rapid elevation adjustments, with positive detent locking

Made of extremely durable high-grade polymer and metal

Available in black, olive drab green or flat dark earth


All 1913 Picatinny rails

The FBS should never be mounted on a railed gas block

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