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Hi Jim, this is the "Optics Ready Version" so you will need to replace the gas block for one that has a rail for a flip up front sight.

you can use any rail mounted rear but for the front you would need either to replace the gas block with on that has a sight or replace the forearm with on that has a rail and then ad a rail mounted front sight https://www.bravocompanyusa.com/AR15-Front-Sight-F-Marked-625-p/front%20sight%20base%20-%20f%20625.htm