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SPRING KIT, CUSTOM-TUNE, S&W J FRAME, REVOLVER

Wilson Combat
SKU:
321
$9.95
(29 reviews)
Current Stock:
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Wilson Combat

The Wilson Combat custom-tune spring kit for the S&W J frame revolver is here to revolutionize your shooting experience. This kit includes all that you need to upgrade your Smith & Wesson revolver. 

Transform your shooting experience with the Wilson Combat custom-tune spring kit for the S&W J frame revolver! This revolutionary package provides you with everything necessary to upgrade your Smith & Wesson revolver offering an 8# reduced power hammer spring, and 3 additional reduced power rebound trigger springs. With this premium upgrade, you'll experience a lighter trigger pull . Make your shooting experience smoother and more precise with the Wilson Combat custom-tune spring kit! Get it today and revolutionize your J frame revolver. 

Kit Contains:

  • 8# reduced power hammer spring
  • 13#, 14#, 15# reduced power rebound trigger spring

NOTE: Not for use in rimfire models.

For spring installation notes, please click here.

Reviews

  • 5
    Model 63 great improvement

    Posted by Jim B on Jan 13th 2026

    Original springs gave over 12 lb double action and 3 lb 10.5 oz single action. New springs (13# trigger spring) gave 8 lb 2 oz double and 2 lb 6 oz single. Very smooth.

  • 5
    Just do it!

    Posted by GinWA on Feb 15th 2025

    I installed the kit following some videos on YouTube. While I was in there I did some light polishing and oiling. I think I installed the medium weight spring option (it was over five years ago). It's always worked great and I've never had any problems. It's a slam dunk no brainier! Just do it!

  • 5
    Love it

    Posted by Ken on Dec 28th 2023

    Great product, easy enough to install. Works great. Vastly improved my accuracy.

  • 5
    Very smooth now

    Posted by Don G. on Nov 29th 2023

    Wow. What a difference! My 637 was very hard to hold on target with the stock springs and DA had a stiff, horrible wall to squeeze past. I thought I'd try this kit out. I found a few instructional videos online and while I had my gun apart, I also gave a very light polish to the rebound slide while I was in there. Buttoned it back up, and wow! It's like a completely different gun with extremely smooth DA now and completely predictable DA "hold" at mid travel. SA is light and crisp but not hair-trigger. It's not too light of trigger pull to be unsafe for carry and my target groups are way, way tighter thanks to the improved smoothness. My hat's off to you guys -- awesome upgrade and excellent value for the money!

  • 5
    Happy wife…happy life????

    Posted by Sky on Nov 28th 2023

    Don’t know the specs but #14 ???? trigger spring and #8 hammer, as advised herein…took our model 36 Chief’s Special, turned it into a Princess Smith ???? as opposed to a Ladysmith…she sure shoots smooth‼️ My spouse could not trigger this beautiful piece. She could only hammer back, single shot before, “WOW‼️” Her word. So, when I say, “Annie get your gun,” she says who the hell is Annie???? Butter smooth action‼️ Thank you very much????????

  • 5
    Excellent Upgrade!!!

    Posted by Jim L. on Nov 9th 2023

    Bought this spring kit for my wife's brand new 642. Super easy to replace the springs, and the trigger is smooth as butter now! Well worth the $!!!

  • 5
    much improved

    Posted by J-Frame Spring Kit 442 on Nov 8th 2023

    Very affordable, efficient delivery, perfect performance.

  • 5
    Outstanding kit

    Posted by Brian on Aug 16th 2023

    Took my time. Didn't rush. The verdict is in. The double action was originally over 12 pounds. My gauge only goes to 12 so I don't know how much over 12 it was. Now it measures 8 pounds 4 ounces. The single action was a very good 3 pounds 8 ounces stock and is now 2 pounds even. My little Pro Series Model 60 really is Pro Series now! A heavy double action on a light weight gun makes accuracy tough. It feels fantastic now! Thank you Wilson for branching out into revolvers!

  • 5
    Trigger Now Smooth As Butter!

    Posted by Cpt Kenneth Wood on Feb 16th 2023

    Replaced the factory springs with this awesome Wilson 321Kit. Tip: To remove cover plate to get at the trigger spring, you have the one large frame screw which holds the cylinder in place--it's got red Lok-Tite on it. I soaked all three screws with PB Blaster for 3 days. Then used a tiny hammer on my gunsmith screwdriver to tap-tap-tap it. It finally came out. Go slow--all will be well. Trigger job and re-set is now superb!