Ar barrel

Daniel Defense and Colt barrels have been excellent for me and both are available with front sights. Cheaper would be Palmetto State Armory (I hear they are FN). I believe one can get almost any barrel nowadays with a front sight. I am putting together 2 AR15's now with the ARMS front sight that looks like the std but actually folds down. When ya get a barrel that really groups with iron sights, I like to put a scope on it and see what the rifle is capable of and that collapsible ARMS seems like it will work for this.
Have heard great things about BCM stainless barrels but have not yet owned one.