Thit is 5.56 Black Hills 62gr. TSX Hollow Point Ammo. Black Hills has loaded this cartridge to true 5.56 specs and has topped it off with Barnes' famous Triple Shock X (TSX) all copper hollow point. This combination of slightly increased velocity and an excellent multi-purpose projectile allows you to get the maximum potential out of your 5.56 rifle. Black Hills Ammunition is highly respected all over the country. Black Hills supplies all five US military branches with ammunition. There are many Law Enforcement Agencies using Black Hills nationwide. They only use the best components available. This factory new ammo is very accurate, dependable, non-corrosive, boxer primed and reloadable. Comes packed in 50rds. per box.