The Front Backup Sight is an advanced, low-profile, durable, auxiliary front sight.
The Front Backup Sight 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 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® KPOS.
Shooting Supplies Ltd, All rights Reserved. 2021