FAB Defense Flip-Up Sight Set - Front/Rear for Quick Target Acquisition - FX-FRBSOSB
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FAB Defense
Overview
The FAB Defense Flip-Up Sight Set is designed for quick target acquisition, featuring both front and rear sights that can be folded down when not in use. This set allows for a streamlined profile when deployed and ensures quick readiness for engagement when needed. Commonly found in carbine builds chambered for 5.56 NATO, this sight set enhances versatility while maintaining a low profile.
Specifications
FAB Defense Flip-Up Sight Set - Front/Rear for Quick Target Acquisition - FX-FRBSOSB
Available Merchants(4)
Prices checked
Price Alert
October 2026 on GunPartPicker
FAB Defense Flip-Up Sight Set - Front/Rear for Quick Target Acquisition - FX-FRBSOSB ranked #13 of the 86 iron sights builders added on GunPartPicker in October 2026. Builders have added it to their builds on GunPartPicker. Since April 2026, it ranks #28 of the 170 iron sights builders have added. Builds with this iron sight are mostly chambered in 5.56 NATO (78%, then 300 Blackout 17%), split between mid-length (50%) and carbine-length (29%) gas systems, and nearly all AR-15.
Availability is good: it was in stock at one retailer or another nearly every time we checked in October 2026, and today 2 of the 4 retailers we track have it in stock. Prices barely moved in October 2026, holding around $86.30, with no real sale all month. Buying today, the lowest price is $86.30 at Optics Planet, which matches the best price we saw in October.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
CaliberBased on real build data showing which calibers builders choose alongside this product.
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
Builds Featuring This Part
See all builds →Builds in the community that include the FAB Defense Flip-Up Sight Set - Front/Rear for Quick Target Acquisition - FX-FRBSOSB
| Build | Parts | Total |
|---|---|---|
 | 22 | $2406.16 |
 | 18 | $4511.44 |
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