Sigma 9VE slide doesn't Lock Back

I wouldnt wait either and I can see your point. I thought S&W had a lifetime warranty though? Thats the only reason why im waiting. If Im wrong, Ill call today....and gordon...is it the winchester kit?
 
cleaned it up and took it to the range today. First few mags, same problems. Then I tried 147 JHP and it locked back.. Hooray!!! Then tried 115 FMJ again, and it didnt lock back. So I asked some questions, and an attendant test fired it with 115 FMJ and it locked back he said. Then I took my last 5 FMJ rounds and did what he said. Apparently, I wasnt locking my wrists together, but I was holding it tight. But I went back in there, last five rounds, locking my wrists and it locked back. My sign is stupid.
 
I had that problem with my Sigma when I first got it. Result was during the recoil, my thumb was hitting the slide release. I suggest putting your thumb under the slide release, loading one round in the mag, and shooting it that way a few times to see if that is your problem. Hope it works out for you.
 
WWB is some of the worst ammo out there. Most problems can be traced back to ammo specifically WWB. id rather use blazer than WWB
 
OKFC05 said:
There is something you can check before sending it in, if you want.

First, put in an empty magazine and pull the slide back by hand. Did the slide lock back? If yes, it is possible that the problem can be eliminated by disassembling and cleaning the magazines (I use CRC silicone, and wipe dry), and carefully cleaning and lubing the gun per factory manual (not excessively).

Then test the gun with a full-power quality ammo (WWB tends to be a little wimpy). Just put in a couple of rounds at a time for the test.
If it then works, after shooting it a few more times it will probably shoot the WWB OK.
A combination of not clean, brand new, and wimpy ammo can cause short-stroking the slide and failure to lock.
Click to expand...

I second the clean the magazines idea. When I first started using my Sigma, I had a number of fail to feeds, times when the slide didn't lock back, even a couple when it locked back and shouldn't have. I had cleaned the gun before using it but not the mags. Then I read something on the forum about taking apart and cleaning the mags, problems solved. Now probably at least 2000 rounds and no worries.
 
No WWB for me, at least not in the bulk pack. Blazer brass and Federal are cheaper for me and I have never had a problem with them, WWB I had enough near-squibs in my 9mm that I decided to not buy any more.
 
Also if you keep your mags fully loaded all the time, will cause springs to get weak. Rotate mags and maybe try to load 8 in 10 rd mag and 14 in 16 rd mag. (lesson learned Afghanistan)
 
I find it hard to believe that WWB ammo could be that bad. That's all I've shot I'm my sigma and had nary a problem in 6-800 rounds.
However I clean meticulously after each shooting trip. THAT DAY ASAP.

It seems like most problems come from user error in maintenance and technique. Not that I have perfect technique.

At least you figured it out
 
I had the same problem and some time I have FTE. In my opinon, you dudes need to send your gun back to S&W.

I got mine back last year and I dont even think about it any more. Let the PRO's do their work FOR FREE!!! Why even "figure" it out?

Call them NOW! Be safe. Good luck
 
Guys... I see most folk jump directly to equipment error...

Not to insult anyone, but have you all entirely eliminated the possibility of operator error?

I see one reference was made to 'limp wristing', and correcting this solved the problem. Next thing I would look at is how you shoot. Thumbs up or thumbs down?

If you shoot thumbs up you may very well be preventing the slide lock from functioning. The Sigma (and the SD) have honking great slide lock levers. ANY pressure on them will prevent them from activating.
 
My used 9VE started to experience the same thing a couple of days ago. Not knowing how old the magazine was I took it apart, cleaned it, stretched the spring a bit and the slide now locks back on empty like it should. However, I'll order a new Wolf spring to replace the old one just to be on the safe side.

BTW, I personally haven't had a major problems with WWB in the majority of my 9mm firearms. The only thing that I've noticed is inconsistency in COAL which resulted in a feeding problems in one of my pistols. For that particular pistol I run the rounds through my bullet seating die to obtain a consistent length.
 
Garpo said:
My used 9VE started to experience the same thing a couple of days ago. Not knowing how old the magazine was I took it apart, cleaned it, stretched the spring a bit and the slide now locks back on empty like it should. However, I'll order a new Wolf spring to replace the old one just to be on the safe side.

BTW, I personally haven't had a major problems with WWB in the majority of my 9mm firearms. The only thing that I've noticed is inconsistency in COAL which resulted in a feeding problems in one of my pistols. For that particular pistol I run the rounds through my bullet seating die to obtain a consistent length.
Click to expand...

The lifetime repair policy doesn't require registration and they are apparently honoring used guns as well....you might simply send it to them with the slide-lock issue and let it be "repaired" for free rather than ordering a new spring on your dime....the warranty was meant to be used, and was a huge part of my buying mine....they will generally not be looking to clang a claim with the "normal wear and tear" thing, as it's about customer relations on a gun which costs them very little in the first place....we are not talking forged/machined/hand-fit parts here....
 
billdeserthills said:
I have heard of several guns that were using WWB at the time they blew up
Click to expand...

I had feeding issues with the 115gr but not the 147gr, also on a stiff new mag...I shoot Winwhite all the time and find it great and consistant ammo, maybe a bot of variation in OAL, but generally, far Far FAR above Blazer brass with the soft lead bonded copper plating/burred-case-mouths/inconsistant-crimp/COL-all-over-the-map as well as loaded rounds, and this is my experience through multiple calibers of the stuff....of course, i only shoot about 1000rds a month, so folks with more experience may have some better input.
 
i too had this problem but ive only put 41 rounds tru it so far and i think it was user error for me because after i fired one mag full it didnt hold back so i got both mags and 2 bullets and got a better grip/hold of the gun sure enough both LRHO worked........ on a side note i really want to shoot it more but the place i buy my ammo is sold out of 9mm :(
 
Used many 100 value packs of WWB in several guns in 9mm and .45 ACP in the past 10+ years, never had a problem.

Also had several of the 50 round boxes with NATO marked (+) brass. Don't know if the ammo was an overrun on a NATO contract, or just an overrun of the brass.
 
I've got the sigma 9ve and was having this problem after putting about 200 rounds through it. Took the mag apart, cleaned it and I've not had the problem again after another 400 rounds. Didn't stretch the spring or lube it at all and it still works like a charm.
 
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