Sigma Trigger Job

[Steve912]

We'll just disagree on the "long revolver-like" pull.

The only flaw I've found on my SW40F is a tendency to shave primers and deposit the results in the striker block bore. It's fed and fired all manner of FMJ and JHP, 135-180gr, without issue and can put rounds into a five gallon bucket at 120 yards off-hand with pleasantly boring regularity.

I found mention somewhere that chamfering the rectangular striker aperture in the breechface, can alleviate this condition. I've only recently resumed shooting the pistol, and chamfering *seems* to have reduced the primer shaving.

Edit: I picked up a SD9VE recently, and found it shares the same accuracy as the SW40F. Both really benefit from the gawdawful (but remarkably effective) pencil eraser overtravel stop.

 

[Ofc.JL]

Steve, the really early Sigma's did indeed have better triggers than the SW VE series. The SW VE series all have a long trigger pull. And if the firing pin breech face on your pistol was not chamfered, you do indeed have a very early pistol w/ a better trigger pull. Not many of the early Sigma pistol are around anymore. The early models were the best, IMHO. You have a jewel of a pistol.

 

[kenny brooks]

There not Sigma's anymore,

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[Steve912]

There not Sigma's anymore,

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Mine is...I purchased it in 1994

With the gawdawful pencil eraser trigger stop, it really does
approach the 'snapping icicle' sensation on striker release.

 

[kenny brooks]

The old ones are Sigma's,,,Smith trying to get rid of sigma name,that's the sdve series not Sigma's..I lime the trigger on mine,,,if you mess with trigger you void warranty, great gun for money

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[Steve912]

Price point, not lawyers...accountants!

I am sorry but I have to disagree with you. There are surely reasons other than what you call "PC", whatever that means in the context of trigger design.

I agree with OU here.

The same weasle-sniffing corporate attorneys that mandate a heavier stock trigger on a less expensive (SD_VE) product line, approve a lighter stock trigger on a more expensive (M&P) product line?

I believe it's based on the price point S&W wants the product to sell at. Stamp/mold/machine components and put a "good enough to go out the door" finish on them, with no further time or labor invested.

Higher priced/wider profit margin products can still be profitable with more time & labor expended in putting better smoothing & finishing on parts (or using a more expensive production technology that produces a better finish from the get go), but the SD products have to go with less, or S&W will end up breaking even, or losing money in the deal.

Personally, I *like* these types of products. I enjoy putting in the time and labor in completing what the factory started.

 

[Steve912]

Also, S&W started crimping in the sear pin, making it difficult to get it out on the later guns.

My March 1994 production SW40F has a crimped pin on the sear assembly. The sear itself was nicely finished all around, but the 'channel' itself was a bit rough. I packed it with some mild metal polishing paste and worked it by hand (back and forth, back and forth, back and forth ) and she smoothed right up.

I can imagine with production variance, that some pistols might have had pretty hard pulls.

 

[kenny brooks]

My sd9ve has a nice factory trigger,..the sdves are not Sigma's per Smith

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[Virginia John]

Mine was an SW9VE. Terrible trigger, hence the trigger job.