FAB Defense Rear Back-Up Sight

Description: FAB Defense Rear Back-Up Sight. Made from extremely durable high-grade polymer, this FAB Defense rear back-up sight is for the AR-15, M-16 and M4 rifle platforms chambered in .223 Rem, 5.56x45mm, and .300 Blackout. This piece can be used as a primary or back-up sight and showcases an ergonomic angel-wing-shaped shroud that helps center the image with any front sight and has dual apertures that are 3mm for longer eye relief mounting and low light target acquisition. The RBS is easily mounted to any 1913 Picatinny rail and works great as a replacement piece, upgrade, or for the next custom workshop build.

The RBS is an advanced, dual aperture, durable and low-profile auxiliary rear sight. It can be used with any front sight and was designed for more accurate aiming and faster target acquisition. Windage is easily and quickly adjusted without tools. RBS 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 K.P.O.S.

Features:

• Can be used as primary or back-up sight
• Ergonomic angel-wing-shaped shroud helps center the image with any front sight, and when used with a matching FAB Defense FBS Front Back-up Sight, it creates a precise optical tunnel that ensures more accurate aiming and faster target acquisition
• 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; each is instantly selectable to match conditions
• 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 windage adjustments, with positive detent locking
• Made of extremely durable high-grade polymer and metal

Manufacturer: FAB Defense

PRODUCT SPECIFICATIONS:

• Brand: FAB Defense
• Caliber: .223 Rem,5.56x45mm,.300 Blackout
• Finish / Color: Black
• Firearm Type: Pistol,Rifle
• Material: Polymer
• Models Fit: AR-15
• Sight Style: Iron Sight