I don't mean to disagree but, I'm pretty sure these were only made in single action. I purchased mine because it was advertised as DA/SA and I thought it was malfunctioning when I first sat down with it. A call to Taurus confirmed that the PT638 SA (as pictured on the Acadamy site) was a single action only. Not just my 638 but all 638's as SA signifies. My wife didn't like having it in her bedstand "cocked and locked" so I parted with it and now have a G2 Mil Pro.