Hey everyone. I am in the middle of my first Build. I have the lower done and just bought the parts for my upper; all but the gastube, barrel nut assembly, and all the parts that are forward of the upper receiver. I am looking for recomendations for the barrel and fre-float handguard. I am partial to mid-length and would want one of the hand guards that allows me to place the small picatinnys any where. My main goal is to stay light on this firearm. I also am unsure on the gas block and type for this hanguard. Would love a block that has an integral flip up sight.