The Maxim Defense 5.56 NATO 70 Grain TUI Ammunition is a match-grade, lead-free rifle round engineered for shooters who demand precision, penetration, and decisive terminal performance. Built around a Solid Copper Spun (SCS) projectile and their Tumble Upon Impact (TUI) technology, this ammunition is designed to penetrate deeply and deliver rapid energy transfer upon impact while maintaining excellent accuracy and velocity.