RBS FAB Defense Rear Back-Up Sight

The RBS Rear polymer Back-up sight is a cutting edge, low-profile, tactical back-up sight.

The dual aperture RBS rear sight is windage adjustable and can be mounted on all 1913 picatinny rails, but is specialty made for the M4 / AR-15 / M-16 platform and the K.P.O.S.

Advantages:

• Very low profile & slim design
• Can be used as primary or back-up sight
• State-of-The-art ergonomic & ambidextrous design
• All manual configuration, no tools needed for windage adjustments
• Durable high grade polymer & metal construction
• Spring based locking mechanism - will not break or deform