FAB Defense Folding Front Site, Black - FX-FBS

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FAB Defense Folding Front Site, Black - FX-FBS


Quick Overview

SKU: 165451182
UPC: 7290105942005
  • Brand: Fab Defense
  • Compatibility: 1913 MIL-STD Picatinny Rails
  • Material: Polymer and Metal
  • Color: Black
  • Length: 2.04" (Closed) 1.18" (Open)
  • Height: .55" (Closed), 1.65" (Open)
  • Width: 1.26"
  • Weight: .88 oz.

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The FBS Front Back-Up Sight by Fab Defense 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.

The 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
  • The 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


**Do not mount on a gas block


Palmetto State Armory is your top choice for tactical accessories and gear from Fab Defense and other top manufacturers!

SKU: 165451182
SKU 165451182
Brand FAB Defense
Department AR Parts
Daily Deal No
Daily Deal Expires No
Unit Price No
Youtube Video No
Free Shipping? No
Free Shipping Qty Label No
Free Shipping Qty No
SKU: 165451182

Questions and Answers

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Browse 1 question Browse 1 question and 1 answer
Is this a flip up sight to be sure?
Brooks on Oct 25, 2019
BEST ANSWER: Yes, flip up..


5.0 / 5.0
1 Review
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Flip up
Really nice front flip up site
October 25, 2019
10 months ago

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