The Apex Evolution IV hammer kit is a revolutionary upgrade for revolver enthusiasts seeking to elevate their firearm's performance to new heights. Engineered with precision, this kit incorporates the advanced pinned sear and stirrup design, mirroring the craftsmanship found in the renowned performance center hammer. By replacing standard MIM components, the kit significantly enhances your revolver's functionality. When expertly tuned, it transforms your factory Double Action Only (DAO) trigger pull from a hefty 12+ lb. To a sleek, competition-ready 4 lb. This remarkable reduction in trigger pull weight is ideal for competitive shooting, though it is recommended to use hand loaded ammunition for optimal performance. The Apex Evolution IV hammer kit is the ultimate solution for those looking to convert their revolver to a high-performance DAO wheelgun, offering unparalleled precision and control. Semi drop-in replacement for the factory hammer (minor fitting may be necessary) Adjusting the strain screw to reduce the trigger pull weight The revolver is converted to double action only (DAO) and is designed without a hammer spur for manual cocking Compatible exclusively with current production S&W N-Frame centerfire revolvers