The K-frame is a type of firearm frame commonly used in revolvers, particularly those manufactured by Smith & Wesson. It is designed to accommodate medium-sized cartridges, making it versatile for various shooting applications. The K-frame is known for its balance and durability, which contributes to its popularity among both law enforcement and civilian shooters. Introduced in the 1890s, the K-frame has been used in several iconic models, including the Model 10 and Model 19. Its design allows for easy maintenance and customization, making it a favored choice for enthusiasts and collectors. The K-frame remains a significant part of revolver history.