Back when the revolver was King, wheelgun shooters and manufacturers paid attention to details that are sometimes overlooked today. A great example of this, is the host of trigger and hammer options that were available back when sixguns still filled most of the duty holsters and won most of the matches.
When I initally pulled my 640 Pro Series out of the box I was in love. That feeling only lasted until the first time I pulled the trigger. Even though this is a Pro Series gun, the trigger was abysmal (read: about average for a J-Frame). Attempting to test its weight on my Lyman trigger pull gauge was futile. I received the dreaded “overload” message; the trigger pull exceeded the gauge’s 12-lb capacity. Needing badly to lighten it, I purchased the Apex Duty-Carry Spring Kit from Apex Tactical Specialties.