S&W 629 trigger replacement

km101 · Nov 18, 2019

My 629-3 has a target trigger that is sharply serrated and will irritate or cut my trigger finger depending on how much I shoot. I don’t want to “de-burr” it as I want to keep it original. I have a smooth trigger that I acquired years ago and I would like to use it on this gun, but most of my parts on hand are for the S&W K frame and I don’t remember if the K and N frames use the same trigger. I know the hammers are different but I’m unsure about the triggers. Same or different?

Thanks

alfsauve · Nov 18, 2019

Brownell's lists only one replacement trigger fits all for K/L/N/X. However, it does say "current" production. Can't find anything specific in the Catalog that would indicate one way or the other.

Do you have a K/L frame you could swap the trigger and see if it works?

labnoti · Nov 18, 2019

https://tkcustom.com/products/tkc-speed-trigger-polished

TK indicates their replacement trigger fits K through N

"TKC Speed Trigger for sale fits: (K-L-N-Frame) S&W replacement trigger."

shuvelrider · Nov 18, 2019

Can you get a "trigger shoe" to attach over it, benefit is a wider surface for the finger to press across.

km101 · Nov 19, 2019

Thanks gentlemen, it looks like they are all the same.

ATLDave · Nov 19, 2019

shuvelrider said:
Can you get a "trigger shoe" to attach over it, benefit is a wider surface for the finger to press across.

Which is also a drawback. A wider surface area can make a trigger feel slightly lighter, but can also make it harder (particularly in DA) to avoid inputting sideways input.

Remember that the trigger moves in an arc, and our trigger finger pulls in an arc - but the arcs are at right angles to one another. With the sizable arc of each required for a revolver DA pull, the angles between them change quite a bit. Having a smooth, rounded trigger of moderate width allows the precise pressure point to move just a little over the face of the trigger/finger... which is actually good for keeping the input "straight back."

shuvelrider · Nov 19, 2019

ATLDave said:
Which is also a drawback. A wider surface area can make a trigger feel slightly lighter, but can also make it harder (particularly in DA) to avoid inputting sideways input.

Remember that the trigger moves in an arc, and our trigger finger pulls in an arc - but the arcs are at right angles to one another. With the sizable arc of each required for a revolver DA pull, the angles between them change quite a bit. Having a smooth, rounded trigger of moderate width allows the precise pressure point to move just a little over the face of the trigger/finger... which is actually good for keeping the input "straight back."

The OP seems to be looking for better comfort for pulling a trigger, not the wizbang science of what happens during the process. I prefer a wider trigger face to spread the pressure across my fingertip, it gives me a better feel for the "breaking point" before the hammer drops. . Perhaps the OP could buff down the serrations on his trigger, using a stiff felt wheel and metal polishing compound.

S&W 629 trigger replacement

km101

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