I'm interested in buying a 640 pro series , but have heard the trigger pull is very hard.
has anyone ever had a "trigger" or "action job" done on their 640?

I have a 640 pro and the trigger is actually pretty smooth. Its a little heavy, but I wouldn't use any words like "gritty" "stacking" or "sticky" to describe it. Its just a smooth heavy DA pull. At some point it may get a spring kit to lighten the pul slightly, but only having about 500 rounds through it so far, its one of the best triggers I have felt on a new smith in years...

I would buy it first, fire a few hundred rounds through it, then determine if you actually need an action job. I know more than a couple people who have paid for an action job, only to get back their gun and find the pull weight is within a couple ounces of what it was and not be able to feel any real difference because they had a decent trigger before and didn't realize it.

thanks for the tip, I appreciate it. now to find a dealer that has a brand new one for sale at a reasonable price.

Good luck with that last part... Anyplace local tha had one wanted full msrp for it. I bought a used but like new one from a forum member here...

Good luck...

I got mine as a replacement for a broken 642 and waited five months for S&W to build it and sent it out to me.

I have yet to see one at one of my LGS.

Edmo

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TRUTH: Don't delete my posts!

I don't own a 640, but I have live fired and dry fired several examples. The trigger from the factory is absolutely excellent! One of the better factory DA revolver triggers. I wouldn't do a thing to it.

Cheapest I see a new one go for is $670 on GB or at the LGS.

My 640 Pro came from the factory with a pretty nice trigger. I installed an Apex spring kit and am very pleased with the trigger now.

My 629 PC came with a very smooth but somewhat heavy trigger. My scale only goes up to 12 so I only knew the DA was more than that. SA was 4.5 lbs. I put in the Wilson Combat spring kit (13lb return spring) and the Cylinder and Slide extended firing pin. Double action is now 8.5 lbs and single is 3 1/4. The spring kit and pin are available at Midway. There are a videos on YouTube showing how to do it. Pretty simple.

For a self defense gun with no hammer, a heavy trigger pull is appropriate, IMO. Sure it's heavy, as it was intended to be, but can make incredibly small groups, they may not always be exactly where you want them, but it is about the only J frame snub (I) can hit all 5 steel plates with, I sure can't do that with an airwt snub. Maybe it's the extra wt from the no dash in s/s.