Semiautomatic pistols are a type of handgun that automatically reloads after each shot, allowing for quicker follow-up shots compared to revolvers. They operate using the energy from the fired cartridge to eject the spent casing and chamber a new round, making them popular for both self-defense and competitive shooting. These pistols come in various calibers and designs, catering to different preferences and needs. Notable examples include the Glock 19 and 1911, each with unique features and histories. Their ease of use and reliability have contributed to their widespread adoption among law enforcement and civilian users alike.