---
product_id: 5353616
title: "FBS Front polymer Back-up sight by Fab Defense (Black)"
brand: "fbs"
price: "£32.32"
currency: GBP
in_stock: false
category: "Misc."
url: https://www.desertcart.co.uk/products/5353616-fbs-front-polymer-back-up-sight-by-fab-defense-black
store_origin: GB
region: United Kingdom
---

# FBS Front polymer Back-up sight by Fab Defense (Black)

**Brand:** fbs
**Price:** £32.32
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** FBS Front polymer Back-up sight by Fab Defense (Black) by fbs
- **How much does it cost?** £32.32 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/5353616-fbs-front-polymer-back-up-sight-by-fab-defense-black)

## Best For

- fbs enthusiasts

## Why This Product

- Trusted fbs brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

The RBS Rear polymer Back-up sight is a cutting edge, low-profile, tactical back-up sight.

The dual aperture RBS rear sight is windage adjustable and can be mounted on all 1913 picatinny rails, but is specialty made for the M4 / AR-15 / M-16 platform and the K.P.O.S.

Advantages:
Very low profile & slim design
Can be used as primary or back-up sight
State-of-The-art ergonomic & ambidextrous design
All manual configuration, no tools needed for windage adjustments
Durable high grade polymer & metal construction
Spring based locking mechanism - will not break or deform

## Features

- Made and shipped from Israel, takes up to 7 business days to arrive
- Very low profile & slim design
- Can be used as primary or back-up sight
- State-of-The-art ergonomic & ambidextrous design
- All manual configuration, no tools needed for windage adjustments

## Images

![FBS Front polymer Back-up sight by Fab Defense (Black) - Image 1](https://images-na.ssl-images-amazon.com/images/I/41SfURzyi3L.jpg)
![FBS Front polymer Back-up sight by Fab Defense (Black) - Image 2](https://images-na.ssl-images-amazon.com/images/I/41hng88GJGL.jpg)
![FBS Front polymer Back-up sight by Fab Defense (Black) - Image 3](https://images-na.ssl-images-amazon.com/images/I/41qdNj2b0VL.jpg)
![FBS Front polymer Back-up sight by Fab Defense (Black) - Image 4](https://images-na.ssl-images-amazon.com/images/I/41xko2oiBcL.jpg)

---

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**Shop now:** [https://www.desertcart.co.uk/products/5353616-fbs-front-polymer-back-up-sight-by-fab-defense-black](https://www.desertcart.co.uk/products/5353616-fbs-front-polymer-back-up-sight-by-fab-defense-black)

---

*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-28*