Speed Trigger — S&W K/L/N/X Frame Revolver
Speed Trigger — S&W K/L/N/X Frame Revolver
A tool steel trigger for your S&W K, L, N, or X frame, built to outperform and outlast the factory part. Current S&W triggers are MIM, or metal injection molded, which is fine for general use but not the most durable or consistent surface for a tuned action. The TK Custom Speed Trigger is machined from hardened tool steel, with a design much closer to S&W's older forged steel triggers that a lot of shooters still consider the gold standard. The result is a harder, smoother, more durable trigger that holds up to a high round count and a finely tuned action.
Why the material matters: on a tuned action, the trigger's engagement surfaces do precise, repeated work, and a harder steel holds that geometry longer than a MIM part. That means the crisp feel you set up stays crisp over thousands of rounds instead of slowly wearing off. It is the kind of upgrade you do not think about again once it is in.
Who it is for: anyone building or refining a tuned S&W action who wants a trigger that matches the quality of the work around it, and shooters who simply prefer the feel and durability of a forged-style steel trigger over MIM.
Key Features
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Machined from hardened tool steel, not MIM -
Closer in design to S&W's older forged steel triggers -
Harder, more durable surface that holds up to high round counts -
A consistent foundation for a tuned action -
Available for both standard and combat trigger pin diameters -
For S&W K, L, N, and X frame revolvers
TK Custom is one of the top destinations in the world for S&W action work, and the Speed Trigger is the trigger we reach for when we build a tuned action.
Choose Your Trigger Pin Diameter
S&W uses two different trigger pin diameters, and the Speed Trigger you order needs to match the pin in your revolver. Check the list below or measure your pin, then select the matching option above.
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Standard Trigger Pin (.100"): this is what most S&W K, L, N, and X frame revolvers use. -
Combat Trigger Pin (.125"): used on a smaller number of models, listed below.
Models we have confirmed use the .125" combat trigger pin:
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S&W Model 19 Carry Comp -
S&W Model 686 Carry Comp -
S&W Model 686 Mountain Gun -
S&W Model 617 Mountain Gun -
S&W Model 69 Combat -
S&W Model 66 Combat -
S&W Model 586 L-Comp
That list covers the models we have confirmed, and there may be others. S&W has used the combat pin across a number of special and limited runs, so the model name on its own is not always a guarantee. If you are not sure which pin your revolver has, measure it. Drift out the trigger pin, measure the diameter, and match it to the two sizes above: a .100" pin takes the Standard Trigger Pin option, a .125" pin takes the Combat Trigger Pin option. If you are still not sure, contact us with your model and serial number and we will confirm before you order.
Fitment
Fits S&W K, L, N, and X frame revolvers in both standard and combat trigger pin diameters. Select the pin diameter that matches your gun.
Specs
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Material: hardened tool steel -
Fits: S&W K/L/N/X frame -
Trigger pin diameters: .100" standard and .125" combat -
Made in USA
Guarantee
Best fitment, quality, and durability in the industry, or your money back.
Free Shipping on orders over $250.00 in the USA only!
Smaller orders less than $250.00 are $9.95 for shipping.
No Free Return Shipping with Labor
No International Shipping, except to Canada.
$35.00
Canada - Priority Mail / NO Tracking Out side of USA
Bundle Discounts
Save more when you purchase compatible products together with TK Custom Bundles.
Speed Trigger — S&W K/L/N/X Frame Revolver
Internal Lock Plug Replacement Kit — S&W Revolver
Diamond Speed Hammer Kit — S&W N-Frame
Wolff Reduced Power Main Spring — S&W Revolver
FREQUENTLY ASKED QUESTIONS
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Federal or Remington & others makes works the best with the .025 thick Full Moonclips, which fit all the .38/357 standard moonclip. They allow the cartridges to have some movement or wiggle so that they will fall right into the chambers once properly aligned. Winchester brass does not work at all as the groove width is too tight/small.
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Use this text block to discuss some commonly asked questions like shipping and returns, sizing, warranties, or product and company details.
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There is no SAAMI specifications for the extractor groove and each manufacturer makes them as they want. The following list gives you a great example. This is why the diameter size of the brass is critical to proper loading, unloading and fitment. Cartridge diameter too big and moonclip too small causes the moonclip to bend. The cartridge should rotate within their respective place and wobble slightly when all cartridges are loaded.
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If you are unsure about how to use moon clips for your revolver, or wondering which moon clip to use, call us. See the Contact menu tab.

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