When I got out of the infantry I was looking to buy something similar to what I had when I was in. I ended up getting a Ruger AR-556 that was entirely flat top. No front sight post. Are there non-flip front sight posts for the front of the rail system? I am having a hard time finding them. I just bought a custom spacer for my Holosun 403b so I can absolute cowitness.
Basically I'm looking for something that emulates a fixed front sight gas block but for the picatinny rail at the front of my flat top. Same final hight and all that when adjested for the different position.