The double-action-only version, dubbed the CS9D, was unusual for a Smith auto during the Great DAO Duty Handgun Boom of the 1990s, in that it was a true DAO. The normal Smith DAOs of the era had a pre-loaded trigger that reduced travel and gave a great pull but needed the slide to cycle to cock the action. The CS9D just dispenses with the single-action notch on the hammer and has a regular true double-action pull for every shot.
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