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Questions & Answers
Will this melt if I mount it on my gas block picatinny? Manufacturer Answer

it will melt a little after your foregrip will

by FAB Defense, Manufacturer, May 1, 2025
will this fit a compact Glock 26? Expert Answer

The FAB Defense Front Polymer Flip-up Sight mounts to picatinny rail on AR style rifles. It will not work with a Glock 26.

by Hunter, Gear Expert, July 6, 2022
Customer Reviews
Helpful Positive Review
Killer sights by E, July 27, 2016
Really good and easy to use sights. The best part is no tools needed too adjust. Installed in less than 2 minutes and I was ready to go. For the money you can't beat them. When they're down I can still see through my sightmark red dot as well. If you...
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5/5 found this helpful
Helpful Positive Review
Use in real world by C Marcus, April 29, 2021
I purchased both the front and rear FAB Defense sights last month. I went to the range and after adjustments, I was right on target with 1.5 inch groups from 300 blk out with 16 inch barrel. The only issue was the rear sight adjustment is very stiff ...
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1/1 found this helpful
Helpful Positive Review
Mako flip up sights by Erics, December 1, 2016
Mako flip up sights are a nice add on as a set of back ups. Fit and finish is good for a polymer product. The price is in line with other polymer sights. Of course you get the best price and customer service from optics planet.. Don't forget free s...
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1/1 found this helpful
Most Recent Reviews
FAB Defense Front Sight by Joey Z., Verified Owner, June 18, 2026
This product is garbage because it came with a stripped out bolt, and it can’t be replaced.
Most Recent Reviews
Sight is fine by Steve House, Verified Owner, April 29, 2025
But the hex bolt threaded after just one use. Lucky I am okay with the front sight with other mods.
Most Recent Reviews
Good quality sight by Chief O, Verified Owner, April 13, 2025
The Fab Defense TMDFS is top quality. Detent is hard, sits at the perfect height for co-witnessing with an optic. Locks firmly in" up" and won't move when shooting. Very satisfied. And don't forget the Fab Defense rear deployable sight for the perfec...
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Read All 17 Reviews

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Product Info for FAB Defense Top Mounted Deployable Front Sight

Low-profile and durable, the FAB Defense Front Polymer Flip-up Sight can be used with any rear sight. These AR 15 Parts from FAB Defense have been designed to provide an extreme optical advantage when paired with the FAB Defense RBS Rear Back-up Sight. The FAB Defense Front Polymer Flip-up Back-up Sight is easily elevated using pins and can be quickly adjusted without tools.image

Specifications for FAB Defense Top Mounted Deployable Front Sight:

Manufacturer: FAB Defense
Additional Features: Elevation Adjustment
Condition: New
Sight Mounting Orientation: Top Mounted
Sight Position: Front
Gun Model: M16, AR-15, M4
Gun Make: AR Platform
Front Sight Color: Black
Rear Sight Color: Front Sight Only
Deployable: Yes
Fabric/Material: Polymer
Height: 14 mm, 0.55 in
Length: 52 mm, 2.05 in
Illumination Type: Non-Illuminated
Illumination Color: None
Hand: Ambidextrous
Weight: 25 g, 0.055 lb
Width: 32 mm, 1.26 in
Mount Type: Picatinny

Features of FAB Defense Top Mounted Deployable Front Sight:

  • 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

Package Contents:

  • FAB Defense Top Mounted Deployable Front Sight

FAB Defense Top Mounted Deployable Front Sight Orderable Models

List of Orderable Models

  • FAB Defense Top Mounted Deployable Front Sight, Flat Dark Earth, FX-FBST , MPN: fx-fbst , UPC: 7290105947598 , Code: 1S0-IRN-FPFU-FX-FBST
  • FAB Defense Top Mounted Deployable Front Sight, OD Green, FX-FBSG , MPN: fx-fbsg , UPC: 7290105947581 , Code: 1S0-IRN-FPFU-FX-FBSG
  • FAB Defense Top Mounted Deployable Front Sight, Black, FX-FBS , MPN: fx-fbs , UPC: 7290105942005 , Code: 1S0-IRN-FPFU-FX-FBS
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