FBS

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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 desert tan

Compatibility:

  • All 1913 Picatinny rails

IMAGE GALLERY

  • 1425-fbs-3d-open-png
  • 1425-fbs-2d-front-png
  • 1425-kpos-poly-sight-3d-open-png

SPECIFICATIONS

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

AVAILABLE COLORS



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NFR
Carbine Length M16 Aluminum Quad Rail

KPOS G2 Glock 17/19
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RBS
Rear Back-Up Sight