Trigger Upgrade on S & W Airweight

This is a discussion on Trigger Upgrade on S & W Airweight within the Defensive Carry Guns forums, part of the Defensive Carry Discussions category; Thought I'd share my recent experience installing a tactical trigger kit from Apex on my S&W model 637. As many of you know, the trigger ...

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Thread: Trigger Upgrade on S & W Airweight

  1. #1
    Member Array Skidboot's Avatar
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    Trigger Upgrade on S & W Airweight

    Thought I'd share my recent experience installing a tactical trigger kit from Apex on my S&W model 637. As many of you know, the trigger pull on this gun in stock form is a pretty long, hard one. It's not necessarily bad, but I thought I'd give the Apex kit a try. On-line videos make installation pretty easy, and no special tools are needed. Apex says it takes the pull from a stock 13 lbs. down to about 9 lbs. After doing the installation and firing the gun, I'd say that estimate is about spot on. The gun still operates like a double action revolver; there's no mistake about that. But the trigger pull is much easier and more comfortable. I occasionally shoot this J-frame in competition, and sometimes, by the end of the day, the tip of my trigger finger would be raw. I don't see that happening now.

    As I recall, the cost of the kit was about $20 to $25; shipping was fast. I'd say it's a good upgrade for the money.

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    Member Array MPA249's Avatar
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    I am looking at getting a j frame to go with my k frame. I put a wilson combat spring kit in it. I may go the apex kit when I get the j frame. Thanks for your post. Please post an update after you shoot with it. Try different brands and let us know if there are any light hits. I believe federal primers are said to be soft where s&b and cci are rumored to be harder. Thanks and stay safe.

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    Senior Member Array BamaT's Avatar
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    That's interesting, thanks for posting the review. I installed an Apex sear and Ultimate Striker Block in my M&P 9. It made an incredible difference in my gun, both reducing and smoothing the trigger pull, and the difference shows on the targets. It's good to know their J frame kit also performs well, as I'm thinking of picking up another snub. If I do, I'll certainly look into that kit.
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    Member Array 42TNred's Avatar
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    +1 for the Apex kit. I put one in my 642 about a year ago and have never looked back. The difference is very noticeable. Several friends with newer guns can't believe the improvement it makes. No light strikes and I have probably over 300 rounds through mine since installing the Apex kit. It is the best money you can spend on a j frame if you intend to shoot it very much.

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    VIP Member Array Crowman's Avatar
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    Ordering mine now.....

    The below link is to purchase the kit and the links to the disassemble/assemble videos.
    https://apextactical.com/store/produ...php?pid49.html
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    Thanks for the review, I have not used an Apex kit but have used a Wolf kit on a Model 19 snubby. Which springs does the Apex kit replace; the Wolf kit replaces the recoil slide spring kit for a much improved trigger pull with no effect on hammer strike.
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    VIP Member Array Crowman's Avatar
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    Quote Originally Posted by msgt/ret View Post
    Which springs does the Apex kit replace; the Wolf kit replaces the recoil slide spring kit for a much improved trigger pull with no effect on hammer strike.
    The kit contains a new Rebound Slide Spring, Main Spring and an Apex XP Firing Pin kit.
    https://apextactical.com/store/produ...php?pid49.html
    "One of the greatest delusions in the world is the hope that the evils in this world are to be cured by legislation."
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    Second Amendment -- Established December 15, 1791 and slowly eroded ever since What happened to "..... shall not be infringed."

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    Member Array Skidboot's Avatar
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    Looks like all the questions have already been answered. For the record, I have shot a couple of different kinds of ammo through the gun since the upgrade (Blazer and PMC, IIRC) with no problems.

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    Distinguished Member Array noway2's Avatar
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    Thank you for the review. The trigger pull is my main complaint with the airweights as it always seemed a little bit too much. Knowing that there are inexpensive options to correct this, makes me more inclined to consider them.

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    VIP Member Array BugDude's Avatar
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    I put a Wolf shooters pack in my 442 several years ago and it turned it into a great shooter. It consist of a variety of spring sets (main or hammer spring and a trigger return spring) where you can take the overall pull to either 8, 9, or 10 pounds. I went with the two that made it a 9 pound pull and I've shot it over 1,000 times since then and never a problem. Smooth as warm butter.
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    New Member Array deputy125's Avatar
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    How it the trigger return with the APEX?

    I tried a spring change with Wolff on the 642 and just did not care for it as the trigger return did not feel right. While a Lighter pull is appreciated, I also like a positive re-set.

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    Senior Member Array BamaT's Avatar
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    Quote Originally Posted by MPA249 View Post
    I am looking at getting a j frame to go with my k frame. I put a wilson combat spring kit in it. I may go the apex kit when I get the j frame. Thanks for your post. Please post an update after you shoot with it. Try different brands and let us know if there are any light hits. I believe federal primers are said to be soft where s&b and cci are rumored to be harder. Thanks and stay safe.
    Not sure about the S&B, but Federals are definitely softer than CCI. Federal is my preferred primer for handloading.
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    Member Array Skidboot's Avatar
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    Quote Originally Posted by deputy125 View Post
    How it the trigger return with the APEX?

    I tried a spring change with Wolff on the 642 and just did not care for it as the trigger return did not feel right. While a Lighter pull is appreciated, I also like a positive re-set.
    I noticed no difference in the return, but I am not really attentive in this area. Maybe someone else can chime in.

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