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Hi Tim and welcome. This is just listed as a "Curved Trigger" in available listings - https://www.hinterlandoutfitters.com/wilson-combat-sigwcp320c9batc-219522.html ----------------- I would verify whether or not it is "Action Tuned" directly with Wilson Combat Customer Service at: 1-800-955-4856 Office hours are Monday - Thursday, 8:00 AM to 4:30 PM Central time. Cheers and stay safe!

Hi Tim, yes sir, this has the Action Tuned Curved Trigger. ATC at the end of model number SIGWC320C9BATC stands for Action Tuned Curved. Verified here >>> https://wilsoncombat.com/sig-wcp320c-9batc.html Stay safe & have a great day!