first time at the range with my Sigma

[backwoodzboy]

Went out today, the pistol fires, cycles, but will not fire again, I have to pull slide back about 1/4 of the way to recock the hammer. It will fire then, but will not recock. any ideas? Where can I get a tutorial on field stripping, to make sure everything is ok, cause something is deffinetly wrong. What you guys think, feed back is most appreciated!!!

 

[backwoodzboy]

Well, I went ahead and check youtube. I went and started tearing into it. I did notice while shooting today, there was a small spring that was in a spot it wasn't supposed to be. I got in to the disassembly, and I learned there was supposed to be another internal spring that held that spring in place. I tore into a gravity controlled pen because they have lots of springs. I found a temporary replacement. I am going to try to find a better replacement this week. I think the guy who owned it before I tried to give it a trigger job and lost a spring. I went ahead and dry fired it, hold the trigger back, cycled slide, let the trigger return. The hammer recocked, so I could dry fire again, and repeated this a couple of times. So far, so good. I am going to take it out to the range on monday and see how it runs. Here are a coupleof pics of the spring in question!!! I hope this might help someone sometime!!

 

[SocialD]

It appears that the spring that you are pointing to has either been cut or broke. You might want to consider ordering new springs.

 

[backwoodzboy]

Where can I purchase these "sear springs?"

 

[OKFC05]

I think the guy who owned it before I tried to give it a trigger job and lost a spring

Or took it out on purpose.
This "failure to reset the sear" is the exact problem often produced by cutting/removing the Sigma sear springs. Sorry you got stuck with somebody else's mess.

Unfortunately, the last time I tried to help someone get a new set of sear springs, Brownells no longer stocked them.
Suggest you call S&W customer service, explain the problem you found in a used gun, and see what they can do for you.
1-800-331-0852 (USA)
Mon-Fri 8:00AM-8:00PM Eastern Time

 

[backwoodzboy]

I called S&W today to get a new sear block assembly, they just bluntly told me I would have to send it into the factory for repair. I ordered one from Numurich instead. They told me their parts are usuaully new and from S&W.

 

[backwoodzboy]

I just recieved my part today from Numurich. It looks used, but un altered. The two pins on the side inside the assembly block are staked in, and the sear spring is just the internal, no external. Since the pins are staked in, I am thinking it was an early version of the part. The overall fit and finish on this after I cleaned it up is real nice and smooth.

this one is not the best pic I ever took, but you can see a faint wear mark in the center. It did drop in without a hitch, and seems to fire and reset, with dry-firing, I wanna take it out and shoot it, I think the trigger pull might be a little less as well.

 

[keyguy]

I called S&W today to get a new sear block assembly, they just bluntly told me I would have to send it into the factory for repair. I ordered one from Numurich instead. They told me their parts are usuaully new and from S&W.

Are you planning on using this pistol for self defense? If it were me, I'd send it back to S&W to have it properly repaired.

Is your life worth using a used part just to save save a few dollars ??

Just sayin......

Regards,
Mike

 

[backwoodzboy]

This will be a plinking pistol, and used as a back-up for home defense. The part in question does have a better fit and finish, despite being used. It does not look like it was modified. The temporary fix before was functioning fine, no issues at all. I am going to be very critical when it comes to function, it will either function or I will take it to a pistolsmith. A lot of gunsmiths will use used parts in good condition, especially when new ones are not available. I just dont think sending this back to S&W for something I can fix is neccesary. Besides, the part that was in, had been modified, not by me, but by the first owner. That would have voided their warranty.

 

[growr]

Having a problem with a spring like that, has never caused ME a problem with S&W. I always ask when I send something to them to ensure that it meets or exceeds S&W standards for safety.
They have always gone through and replaced the springs including my recoil spring all at No Charge...
Never have they refused to bring a gun back to their safety standards because someone else worked on or tried to modify it.

Anyway, that is the S&W "I" know and enjoy!

Randy

 

[backwoodzboy]

Well, If I have any problems with the Sigma, I will not rule out having S&W work on it, but would like to keep it local. My first problem I encountered was the spring missing in the original part, then I found out the S.A.B. (Sear Assembly Block) had been modified. I think this is all going to be remedied by the new or unmodified S.A.B. Like I mentioned earlier, if I have any further issues, I will consult pistol smith or S&W themselves. For right now, I think this will be all thats needed. I am a firm believer in keeping it as factory spec as possible, and do not think any mods are ever really needed. The only time I ever thought a mod was needed on a pistol, it was a 1911 sear/disconnector and trigger, job. That pistol probably still had a pull of 5lbs, but it was smoother and broke a lot easier. The only reason I even did that, was the parts were not drop in, and needed fitting, and tuning. I appreciate everyones concerns, but I think it will be just fine now. Of course all feedback is always greatly appreciated.

 

[PDL]

You didn't mention which model Sigma you've got.
There have been several and they are different.

I don't pay attention to the ones I don't have, but it seems to me in reading here on the forum that the staked pins and single spring were from an earlier model. That doesn't make it bad, but the outer spring was added for a reason. The trigger mods most experiment with remove the outer spring and the pig tail spring, but the staked pins aren't in the VE models AFAIK.

 

[backwoodzboy]

Well thats Numurich, they said this one would fit, and it does, its like you said, it might be an earlier model though. How would you remove the staked pins, I have no issues with putting my old spring on this "new" assembly. I have the SW9VE.

 

[backwoodzboy]

I was actually able to bend the spring on the "new" assembly without kinking it, now I have the newer larger spring from the newer version, onto an older version that has better factory fit and finish. Trigger pull feels like it has been increased about a pound or two. Now I dont have to worry about the smaller spring getting in a bind, because I have the larger spring holding it in place. I m ight try to go out and put a few rounds through it this week.