S&W Revolver Trigger Job How-To (3 Methods)

So you want to make your Smith & Wesson revolver’s trigger lighter and smoother?

A trigger job is key!

But you’re not sure if you can do it yourself or if you should pony up the $100 to your local gunsmith?

S&W 686 Disassembled
S&W 686 Disassembled

We cover three types of trigger jobs ranging from switching out two springs to full on polishing.

With the most intensive of the trigger jobs, I brought my S&W 686+ double-action trigger pull down from 12 lbs to 9 lbs and the single-action from 5 lb to 3 lb.

We’ll get started soon but first…some disclaimers that you might mess up your gun and make it unsafe.  If in doubt please have a gunsmith do it.

1.  Shoot it…a lot

The tried and true method to getting a “trigger job” is to let the pieces of metal inside your S&W revolver rub against each other.

Dry-firing can up the round count but make sure to have some correct caliber snap caps.  There’s some debate on whether or not dry-firing a revolver can damage stuff…but I always like to take the more cautious route since hammers are expensive!

.357 Magnum Snap Caps
.357 Magnum Snap Caps

I haven’t exactly counted how long it takes until there’s some difference, but it’s likely several thousand.  Check out my review on the Best Place to Buy Ammo Online for some cheap gun food.

Now get shooting!

2. Lighter Springs

This can lower the trigger pull weight of your revolver with a little bit of elbow grease.

If you are carrying or using the revolver for self-defense, I would advice against going too light…or just skip altering the gun altogether.

What You’ll Need

S&W 686 with Wilson Spring Kit
S&W 686 with Wilson Spring Kit

The reduced spring kit comes with 3 different weights for the rebound spring (what dictates how hard back the trigger is returned after firing) and a reduced weight mainspring that affects the trigger the most.

I researched and went with the heaviest rebound spring (14#).

This video from Jerry Miculek goes over everything on how to install the two springs.

One bit of advice is to use the back of the screwdriver to knock out the side plate.  There’s some other videos where they pry it off.  Might work but it can also damage some stuff.  Also keep the screws in the same order.

Knocking Out S&W Sideplate
Knocking Out S&W Sideplate

The hardest part will be taking off and re-installing the rebound spring.

There’s a dedicated tool ($20) for that but I followed Jerry’s tip of using a pen.

Rebound Spring S&W Reinstall
Rebound Spring S&W Reinstall

I’d also advise doing it in a cardboard box or having a cloth draped over just in case the spring goes flying out.  Oh…and eye protection!

You can also adjust the mainspring by tightening a screw…I went with it the max weight (screwed completely down) to avoid light primer strikes.  Couple hundred rounds of my plinking rounds and self-defense rounds and it has always gone bang.

Tension on S&W Mainspring
Tension on S&W Mainspring

3. Springs + Polishing

This one is much more intense than just switching out springs.  After reading this section you might want to hit up your local gunsmith instead…and I wouldn’t blame you!

I researched a ton and had some good experience prior with 1911‘s so I felt pretty comfortable.

Stuff You’ll Need

S&W 686 Disassembled
S&W 686 Disassembled

You’ll see that I use the white Arkansas stone (bottom of the pic) since it’s what I had and since it’s the finest stone (compared to the red India stone), so it doesn’t take as much material off.

I took a little something from multiple source videos.

This quick video gives a closeup of the surfaces you’ll be polishing.  They use an expensive stoning fixture ($160) that you can get if you think you’ll be doing multiple guns.

Note that you will not be touching the Single Action surfaces below…they are hundredths of an inch only.

S&W Single Action Surfaces
S&W Single Action Surfaces

However, you’ll be polishing the Double Action surfaces.

S&W Double Action Surfaces
S&W Double Action Surfaces

Now that you have some idea of what’s going on…I used this video (sorry cannot embed) to see how to use the Arkansas stone and also where to polish in the frame.

I love Nutnfancy but the angles and narration could have used some work.  However, I’d still watch it in its entirety to see how the gunsmith does everything.

Smoothing the Inside of a S&W Revolver
Smoothing the Inside of a S&W Revolver

The main two videos I followed were by MannyCA who walks through all the polishing of individual parts.  However, I only used the Arkansas stone instead of the India stones.

Here’s what my parts looked like after polishing.  Note the smoothed out surfaces of the frame as well as the parts.

S&W 686 Polished Surfaces
S&W 686 Polished Surfaces

Conclusion

I lowered by DA (double-action) pull from 12lb to 9lb and my SA (single-action) pull from 5 lb to 3lb.  This was with the 14 lb rebound spring and the reduced mainspring at max.

With the polishing I managed to get rid of the gritty feeling towards the end of my DA pull.  The SA pull was already pretty perfect from before and since we didn’t touch any of those surfaces, only the weight was reduced with the spring changes.

S&W 686 Smooth as Glass
S&W 686 Smooth as Glass

So which method did you go with?  How did it end up?

2 Comments

  1. Hey man, great articles here. Just wanted to add, the SA sear engagement surface on S&W revolvers hovers right around .005″ from my measurements, which is in the thousandths. About the thickness of a human hair. Pretty crazy.

    Also, about the strain screw. The screw always needs to be tightened down all the way. I usually have a couple extra in the shop ($3) so I can take .010-.020″ off the factory screw, if I go that route. If the screw isn’t tight, it’s not if but when it will back out.

Your email address will not be published. Required fields are marked *