This is Federal TRU .223 Tactical Rifle Urban 55-grain Hi-Shok Soft Point Tip Ammo. The Tactical Rifle Urban (TRU) is custom made for your Urban Rifle. This ammo is designed for deeper penetration. Today’s Law Enforcement Officers need ammunition specifically designed for use in semi-automatic rifles or “Urban Rifles.” Federal TRU ammunition is engineered using mil-quality specifications for ideal functioning in these firearms. Each TRU cartridge is made using select mil-quality low flash powders and the case features thicker brass for added strength.