Liberty Ultra-Light 380 Auto (ACP) +P 50gr HP Handgun Ammo – 20 Rounds – Liberty Ammunition have created a whole new monster with the Ultra-Lights. They’ve combined their innovative Civil Defense projectile with Shell Shock Tech’s groundbreaking new case to create the ultimate self-defense round. For example, their Ultra-Light 9mm+P has more kinetic energy than a lot of 45 ACP self-defense rounds, except it’s more convenient than any self-defense round in today’s market. The total cartridge weight is only 92 grains! That is less than half the weight of a standard 9mm defense round. The Shell Shock two-piece case, outperforms nickel plated brass on every level. It is twice as strong as brass, and only half the weight. The base is nickel-plated aircraft-grade aluminum. The cylinder is a nickel stainless alloy. They are pressure rated up to 65,000 PSI!