PRI flip up front sight base with four set screws for a heavy barrel (.750") I bought it used. It is in very good condition with the box and new gas tube roll pin. I would like to trade it for a .750" for a heavy barrel or .625" for a light profile barrel PRI flip up FSB with the two cap screw design. Doesn't have to be new but should be in good condition. I want to shorten a light and heavy barrel for my RR. I will need to open up the gas hole in the barrel. I will have to start small and work my way up slowly. The two cap screw type will be easier to remove and put back multible times.
I will sell outright for $155. That would include shipping within the CONUS. Pictures are available upon request. The email button is the best way to contact me.