FAB Defense Front Back-Up Sight (BUIS) – Folding Spring-Loaded Polymer & Metal

Upgrade your rifle’s sighting system with the FAB Defense Front Back-Up Sight, a versatile and rugged BUIS designed for both primary and secondary use. The distinctive ergonomic angel-wing-shaped front shroud naturally centers your sight picture with virtually any rear sight — and when paired with the matching FAB Defense RBS Rear Back-Up Sight, it forms a precise optical tunnel for faster target acquisition and improved accuracy.

Built for real-world reliability, the instant spring-locked deployment mechanism snaps into position without slipping, breaking, or deforming under stress. When stowed, the ultra-low folded profile remains smooth and inconspicuous, preventing snags on gear, webbing, or brush in the field. Elevation adjustments are quick and tool-free, featuring positive detent locking so your zero stays exactly where you set it.

Constructed from high-grade polymer and metal, this front sight is engineered to withstand demanding conditions while keeping weight to a minimum. Whether you’re building a backup sighting solution or setting up a dedicated iron sight system, the FAB Defense Front Back-Up Sight delivers the durability and precision you can count on.

Order online today at VanTon Arms and take advantage of our competitive pricing and fast nationwide shipping.