Underwood Ammos Xtreme Defender .45 ACP +P 135-grain ammunition is designed for those seeking advanced bullet construction and high-performance ballistics. Each cartridge features a monolithic solid copper projectile, offering a lead-free solution. Nickel-plated brass cases support smooth operation and corrosion resistance, while +P pressures help achieve a supersonic muzzle velocity. Monolithic copper bullet with no lead content Nickel-plated brass case for enhanced durability Supersonic muzzle velocity rated at 1335 fps Underwoods Xtreme Defender .45 ACP +P comes in boxes of 20 rounds, made for consistent performance in compatible .45 ACP +P firearms. This combination of modern materials and engineering is ideal for users who demand reliable, specialty handgun ammunition.