The Front Backup Sight is an advanced, low-profile, durable, auxiliary front sight.
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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.
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