Hoffman's first performs only in his style of 3d printed lowers, and I modded the pieces to work inside a milspec lower. An image of a forced reset trigger from ATF’s Ammunition Technological know-how Division: Technical Bulletin 22-01. Forced reset triggers are installed by replacement in the trigger Regulate group. https://frt-trigger-for-sale12345.blogsuperapp.com/34668393/not-known-factual-statements-about-force-reset-trigger