Timney is the market leader for Ruger replacement triggers, enhance your Ruger American Rimfire rifle with a high quality Timney Trigger! This is a self-contained, 100% drop-in trigger is ready to install in your Ruger American Rimfire rifle for an exceptionally smooth, crisp, trigger pull. A true drop in trigger! Features Fully adjustable for Sear Engagement (Creep), over travel (Follow through) and Pull Weight Trigger allows you to become more accurate with your rifle No gunsmith needed, easy to install Adjustable for custom feel