A sear for a shotgun trigger assembly is used to convert a pull trigger to a release trigger. The release trigger sear includes a second catch surface that holds the striker catch until the trigger is released. The sear having the second catch surface may be retrofit into an existing pull trigger assembly to convert the pull trigger assembly to a release trigger assembly without further modifications to the trigger assembly. The disclosure also provides a release trigger having an assembly that adjusts the pull and release weights of the trigger.