Federal 5.56 62 Gr MK318 MOD-0 SOST T556TNB1 (500 Rnd Case) NSN: 1305-01-573-2229
[T556TNB1]

Great ammo very accurate, consistent and reliable. The hype is real, this is some really fine ammo that will do whatever you want to do with it. It is more expensive but in my opinion well worth it.