Some have LC 09 with the Nato symbol and others have that plus one to four 1/32" diameter dots punched in the case head. ... and 5,56 x45 Nato ammo. Basically a continuous production "machine" which takes raw materials at one end, and by an interlocked series of Rotary presses, spits out finished ammo at the other end.. Typically, any time ammo accuracy is discussed, the first thing covered is its average MOA capability. After all, that's the accepted industry standard measurement for ammo accuracy, what size group can one expect at a given range. ... M855A1 average: 300yds = 1.93 MOA, 500yds = 2.21 MOA. Looking at my results, even with the one super-tight.