FAB Defense has a flip up front sight that is designed to help you quickly center your target in the sight picture by creating an optical tunnel. The smooth design helps prevent snags and can work as a primary sight. Easily installs on Picatinny rails and has no tool elevation or windage adjustments. Sight has a positive detent lock in the deployed position.

Specifications and Features:
FAB Defense Front Back Up Sight FBS
Can be used as a primary or back-up sight
Ergonomic angel-wing-shaped front shroud helps center the image 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 elevation adjustments, with positive detent locking
Made of extremely durable high-grade polymer and metal
Black