Excellent match with m4e1 lower - Aero Precision M4E1 Stripped Upper Receiver 223 Remington/5.56 NATO

I have several of these uppers and now it’s all I build on. I really like the combo with the M4E1 lower as it has the adjustment to keep everything nice and tight. Finish has held up very well. I’m not particularly gentle with my rifles and it’s still looking pretty good. My only complaint is the ID for the barrel is too tight with the cerakote. I have had to lightly sand this area to increase the ID so I can get a barrel to fit. And changing a barrel is a bear. If you are OCD about clean, the FDE may not be for you. If you don’t want a white car you wouldn’t want the FDE. If you don’t understand the analogy, the FDE probably wouldn’t bother you.