Timney Triggers Impact American, Drop-In Trigger, Fits Ruger American Gen 1, 3-4 Pound Fixed Pull Weight, Anodized 6061 Aluminum Housing, Black Oxide Finish on Trigger Shoe 643C Introducing the Impact American, the newest trigger in Timney's extensive line of Ruger triggers that are American-made by the incredible craftsmen and women who build The World's Finest Triggers.