Underwood Ammo Xtreme Penetrator 9mm Luger +P+ features a high-performance, lead-free solid copper 115 grain bullet designed for deep penetration and dependable operation in defensive situations. The ammo utilizes a uniquely engineered fluted nose and nickel-plated brass case for reliability and function. Solid copper 115 grain bullet for deep penetration +P+ high-pressure load with 1300 fps muzzle velocity Nickel-plated brass casing for reliability This ammunition is designed for those seeking reliable, high-velocity 9mm performance with advanced penetration. Each box contains 20 rounds suitable for defensive use.