Designed to work with all Model 870 shotguns the Trigger Fix allows the user to have a clean smooth fully adjustable trigger pull. Every Timney 870 Trigger Fix is packaged with a sear 3 pull weight springs and a hex head wrench. Simply choose a spring (light medium or heavy) and then fine tune the pull weight with the hex head wrench for a precise setting.Whether you are a slug gun hunter turkey fanatic or trap shooter the Timney 870 Trigger Fix will simply allow you to become more accurate with your pump shotgun.