SKU: D556N9 MODEL: 77GR OTM MK262 MOD 1-C UPC: 6127101264085 Buy your Black Hills Ammunition 5.56 MK 262 Mod1 500 Round Cases at BattleHawk Armory today! If you love accuracy for your AR-15 then you will love 5.56x45 MK262 Mod 1-C by Black Hills Ammunition! This is essentially the same ammunition the reputable South Dakotan manufacturer provides to the U.S. Armed Forces. It features the same components and was manufactured on the same machinery. It also passed the same accuracy tests – it just wasn’t subjected to the additional testing required for the government’s MK262 cartridges.