Fab Defense

FAB Defense FXRBS Rear Back-Up Sight for AR-15/ M16/ M4 Dual Aperture Low Folded Profile Spring-Locked Deployment Black Polymer & Metal

$49.99

In-Stock
brand Fab Defense (usiq)
SKU FX-RBS
UPC 7290105941992
Warehouse Stock 9
Store Stock 0

The RBS is an advanced, low-profile, durable, auxiliary rear sight. It can be used with any front sight, but has been designed to provide an extreme optical advantage. It is readily mounted on any 1913 Picatinny rail, making it ideal for use on M4/AR-15/M-16 platforms. The sight can be used as a primary or back-up sight and the ergonomic angel-wing-shaped front shroud helps center the image with any front sight. The low folded profile is smooth and inconspicuous and will not snag on gear, webbing or brush. The dual apertures are 3mm for longer eye relief mounting, low light and faster target acquisition and 1.5mm for shorter eye relief mounting and greater accuracy. The sight is also made of extremely durable high-grade polymer and metal and has an instant spring-locked deployment mechanism that will not slip, break or deform.

Type Folding Rear
Frame Material Polymer/Metal
Frame Color Black
Firearm Fit AR-15
Base Configuration
Style Folding Rear Sight
Front Material
Rear Material
Front Color
Rear Color
Rail Size
Windage Adjustment Yes
Elevation Adjustment
Fiber Diameter
Firearm Type AR Platform
Overall Rating
0.0/5.0
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