F.A.B. FBS

Front Back-Up Sight

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.

Advantages:

  • 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

Compatibility:

  • All 1913 Picatinny rails
  • The FBS should never be mounted on a railed gas block

You can buy directly

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SPECIFICATIONS

Weight25 gr
Width32 mm
Height14 mm
Length52 mm
Height (open / deployed)42 mm
Length (open / deployed)30 mm

Color





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