FBS Front Back-Up Sight
Prices subject to change without prior notice.
FBS is an advanced, low-profile, durable, auxiliary front sight. It can be used with any rear sight, but has been designed to provide an extreme optical advantage when paired with the FAB Defense® RBS Rear Back-up Sight. Sight pin elevation is easily and quickly adjusted without tools. FBS Front Back-Up Sight for M4 / AR-15 / M-16 platforms