[Willard]

Generally, being "old school", I normally zeroed my ARs, just as we did, during my time in the service. Depending on which basic iron sight system, the weapon was equipped with.

During my time in LE, most of what the department had, was actual full sized M16A1s, except for one I had converted to a "carbine" with a 16" A1 Barrel, and CAR stock assembly. In that time frame, I went with a 50 yard zero, and we used 55 grain Federal Premium with the Nosler, as our ranges would normally be under 200 yards. I also had the "Selector Limiters", installed, to prevent full auto selection, for general use, since LEOs have to account for each round they have discharged.

I had modified my A2 Carry handle sights to the "latest" configuration, but have considered going to the 36 yard zero, for all of my BUIS, for a little more flexibility. If I need more "range", with my aging eyes, I'll need a scope!