The compass has 360 hash marks around the bezel, each one corresponding to a single degree of angle. Think of a compass, the kind you use for land navigation ItвЂ™s the easiest measurement system to relate to.

I totally understand why they do it this way. Most of the time, they do this based on linearВ measurement. Most novices take their rifle to the range and fiddle with the iron sight adjustments until they end up at something resembling a zero. So what is a minute of angle, and why does it matter? Many optics work in 1/4 Minute of Angle, вЂњQuarter MOA.вЂќ The detachable A4 sight moves 1/2 Minute of Angle, вЂњHalf MOA,вЂќ for every click. The classic A2 sight, for example, moves the point of impact 1 Minute of Angle (MOA) for every click. Each model moves the point of impact a different amount for each вЂњclickвЂќ of adjustment you move the sight. ItвЂ™s important to talk about angular measurements because not all iron sights are constructed the same. If you want, you could skip my explanation and jump right to my zeroing procedure.Д«ut a littleВ extra information never hurt anyone, right? Before I get to the how-to, letвЂ™s lay out a foundation for angular measurements. Most articles on this topic only go so far as giving you the procedure, but they lack an explanation of why youвЂ™re doing the steps youвЂ™re doing. The same thought process works for a simple set of lightweight fixed sights, folders, or adjustable carry handle sights. This article is about finding and setting a solid zero for your iron sights, regardless of their type. What I amВ saying is that irons can still work well while you save towards a well-made optic. Good optics provide a huge benefit over iron sights with regards to speed and capability. DonвЂ™t get me wrong here, IвЂ™m not saying that irons are вЂњjust as good asвЂќ a quality optic.

A2 carry handle sight surplus