Federal Premium Personal Defense, 380 ACP, 99 Grain, HST, 20 Round Box P380HST1S Subcompact handguns' sleek, lightweight designs make them an ideal choice for concealed carry. To perform to their peak they need the right ammunition: Federal Premium(R) Personal Defense(R) Micro HST(R). The line provides consistent expansion, optimum penetration and superior terminal performance with bullet weights and propellants optimized for the most efficient cycling and accuracy in subcompact handguns.