| Burris AR-F4 Mount Black Updated to fit the FastFire4 s larger window the AR-F4 mount will adapt any Fastfire to an AR flattop. Allows the FastFire to mount at the optimum height so the red dot can co-witness with flip-up sights - can be used with aftermarket risers to... more | | $123.99 $102.79 FREE shipping go to store |