Sig Sauer Air Pistols are carbon copies of original model specifications and handling. Chambered in .177 pellet or steel BB, these CO2-powered, next-generation air pistols have been engineered specifically to closely measure up to the most popular SIG original handgun model platforms — in weight and handling, as well as standards of performance. Perfected for practice with every advantage built in, these airguns are the economic, authentic answer to training more often, more effectively.