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SIG 516 Major Issues

This is a discussion on SIG 516 Major Issues within the SIG Sauer Rifles forums, part of the SIG Sauer Forum category; I went to the range this weekend with my second generation SIG 516 and shot Federal 62 grain 5.56 ammo and had zero problems. I ...


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Old 09-24-2012, 06:18 AM   #31
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I went to the range this weekend with my second generation SIG 516 and shot Federal 62 grain 5.56 ammo and had zero problems. I also shot about 50 rounds of American Eagle 55 grain of 2.23 as well and no issues.

So far only about 300 hundred rounds thru my rifle.
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Old 11-04-2012, 05:04 PM   #32
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My experience with my 516 gen 2 is that if I use a 223 ammo, doesnt matter if steel or brass, it will eject the empty case but will not load the next one in the chamber, I have to swich the gas regulator setting to adverse to push the bcg farther back. But for a 5.56 ammo, normal setting works fine. I think maybe the action spring is too strong and needs breaking in which is why a lower pressure-223 doesnt push it farther back enough than a higher pressure 5.56. Ive only put less than 80 rounds so far, I think eventually after longer use issue will resolve itself. No complaint at all, in fact I got my sig716 fde arriving tomorrow.
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Old 11-06-2012, 10:42 AM   #33
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I've purchased my SIG516 Gen2 in June and only shot WOLF that I had left from a few years back.

If I saw this review, I think I would have skipped it and bought a PWS or LWRC instead.

I'm having the same issue as everyone else, running in "Adverse" and I'm getting FTF (Short Stroke) on almost every round. Granted I've only put about 300 rounds through it, but it's 300 rounds of frustration.

The purchase decision was made based on the "torture" test video as well. I have some XM193 55 grain that I'm saving for a raining day to try the next time I head out to the range.....

If it can shoot at least 250+ rds before FTF, I can understand due to dirty ammo. But clean and freshly lubed???

*Sigh...* such high expectations from SIG and such a let down.
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Old 11-07-2012, 04:49 PM   #34
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Hi Guys....Totally new to the AR platform. Just purchased a 516....after arrival but before testfire I was reading this thread and developed a puckered keester thinking perhaps my research/decision to purchase was void.

I am not sure if my gun is gen 1 or 2. I basically pulled it out of the box and went to shoot. No lube or clean (I figured if Sig torture vid wasn't BS it would go bang) UPDATE: After some research my weapon is a Gen 2 based on the gas valve config. Also...my neighbor is awful handy with the M4 platform (although mostly DI) but gave me a crash course on breakdown and cleaning. Not sure if it is at all relevent...but he cautioned that if the gas ring ends were not offset by a fair margin, the gun will not cycle properly. This was also verified in the Sig factory produced U-tube video. Again, not sure if it is at all relevent to the cycling problems noted in this thread but thought I would mention it just the same.

I intentionally bought several diff. ammo types to test. Today I went to the range and put 300rds downrange w/out one single malfunction (edit..1 time at start of fire/round didnt chamber...checked the mag seat..and yes I had forgot to seat the mag..one slap and away we went) All functioned without having to adjust gas valve from standard 12 o'clock position.

Ammo; Winchester .223 45 gr JHP
PMC .223 55 gr. FMJ
MFS .223 55 gr. FMJ
AE .556 55 gr (I think xm193/fella at the range donated me a few rounds for test)

After a marathon of adjusting front sight elevation without the correct tool to move shot group up well over a foot. Got it zero'd. Now looking to add some optics to help my oldish eyes.

Sorry to hear those that are having trouble. As I am a novice AR'r....I wished I could help more but wanted to post this for those who are considering sending their rifles back to Sig.

I actually researched and bought my Sig because I wanted it to go bang regardless of ammo or conditions....

If I were having to choose ammo for any reason other than accuracy I guess it would be on it's way back to Sig....Just my .02.

Other than a trigger that feels a bit gritty....I am having pretty good luck....and I wish all you the best of luck in ironing out the various issues....

Regards

Last edited by Doncoyotie; 11-08-2012 at 02:26 AM.
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Old 11-09-2012, 02:17 AM   #35
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I've searched high and low on youTube for a video on the issue with the gas rings to no avail.

Any chance you can provide the link please?

The only thing I found related to the alignment of the gas ring was this:
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Old 11-09-2012, 05:29 AM   #36
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I don't think this is the actual video I was thinking of...but it is one of a number of 516 vids I watched to familiarize myself with the gun. (Again novice here)

At 1:20 of the below vid the Sig rep. demonstrates breakdown and cleaning of the BCG with a reference to the process as being "like any other AR15 platform".

In conjunction with my crash course from my neighbor who is very knowledgable and mentioned the gas ring placement importance, I may have assumed the same would be true for the 516. Thus, I mentioned it hoping it would be an easy test and perhaps over optimistic, simple fix for those experiencing cycling problems.

Perhaps old and cornfused...or both...but I am still thinking there is a vid that mentions the gas rings specifically. I will keep lookin.

Hope this helps...Regards


Last edited by Doncoyotie; 11-09-2012 at 05:31 AM.
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Old 11-09-2012, 06:13 AM   #37
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Update for Locochinoloco

Hey Loco....to satisfy my own curiosity I just called Sig and talked to one of their techs.....the rep states that the gas rings on the516 bolt are irrelevent as no gas flows through that area. According to them, the bolt is made by a company that also manufacters DI groups and supplies the bolt for the 516 also. So says Sig....sorry the news wasn't better.

Regards.......
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Old 11-11-2012, 11:28 PM   #38
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Quote:
Originally Posted by sparkybutt79 View Post
I had to thread a barrel for a muzzle brake on a 516. I found out that the barrel nut was smaller than all other AR15 nuts.I called Sig and was told the wrench is not available. I told this man I could thread his barrel, and I was going to get it done. I measured the diameter of the nut, and made a wrench on my mill, with the digital readout . My first try was 20,5/32 hole at a diameter of 18mm. It was too big. so I jumped down to 16mm,and it was a hair tight. I used a 1/8"file, and in a few mins it fit perfect. I welded a handle to it, and it worked fine. the nut was not all that tight from the factory, and it was a regular right hand thread. I mad an extra one for the gun store I do work for. If I can help anyone out email me. Roger
Tell me more about the barrel nut wrench.
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Old 11-13-2012, 08:10 PM   #39
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Spice,
If this is a major issue with you, please sell the gun and go buy a moped!!! You need to solve YOUR problems instead of being a wanny!!! I have seen thousands of crybabies on the internet and I think you guys SUCK!!!
I bought a SS 516 on Friday and have shot 350 rounds through it after only cleaning the barrel of excess oil and have zero problems, at 20 degrees F. I know it sucks buying anything new and having problems. But, you should be a problem-solver instead of being a wanny. This is about manly man stuff instead of a fag website!!! No pussies needed. If you have a dishwasher problem and go out in the front yard and cry to your neighbors, they already know how big a crybaby you are. If you do this on the internet about 5 million people know how big a pussy you are. This website is about some of the best pistols and rifles on the planet. Even the mentally handicapped can solve your problem. Fast Eddie
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Old 11-14-2012, 03:58 PM   #40
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I have the 516 and have run about 300 rounds through it.First 20 were tula and would not cycle,at all,junked the rest of the three boxes and tried the Russian Brown Bear 223 55gr laquer coated,and have not had a problem with them at all.Love this gun.Shot 100 rounds at the range on sunday to zero in and loved every minute.
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Old 11-15-2012, 11:19 AM   #41
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Incidentally, my Gen 1 Sig 516 shoots everything. It did come with a layer of preservative that made it difficult to properly eject 5.56 rounds when it was brand new but once that was cleaned or worn off, I've had zero problems with it using any ammo.

For the most part I shoot American Eagle 5.56 55 grain FMJ and Nato spec 62 grain.

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Old 11-16-2012, 12:06 PM   #42
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I have the exact same problems as Zombie Spice. They took the rifle in and removed a burr off of the normal gas valve and told me everything was fine. Got it back and same problems. Sent it back and it's been almost two months. This is a brand new gun and they have had it longer than me. I'm so disappointed. Apparently, they are waiting on a backordered supressor.
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Old 11-26-2012, 10:18 AM   #43
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Well.... I finally got a chance to go back to the range and this time, I'm a happier man.

I've had issue with my SIG516 Gen2 shooting WOLF .223 ammo. I was extremely disappointed due to constant FTF and short stroke. It seems like the WOLF doesn't generate enough pressure to complete cycle of the BCG and therefore FTF.

This weekend I bought with me.

1. Federal Target .223 FMJ 55 grain (cheap bulk)
2. Federal American Eagle .223 Flat Based Hollow Point 50 grain
3. Remington UMC .223 FMJ 55 grain
4. Federal American Eagle XM193 5.56 55 grain

The SIG516 didn't have any issue on "Position 2/Normal" with #1 or #2. So I didn't get to try #3 or #4.

I just build a DI AR with Daniel Defense 5.56 barrel and it just goes round after round after round on the WOLF ... I guess WOLF just doesn't work well with the SIG516... so when SHTF ... she''ll feed her AR all the cheap ammo? LOL
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Old 11-26-2012, 02:51 PM   #44
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Quote:
Originally Posted by locochinoloco View Post
Well.... I finally got a chance to go back to the range and this time, I'm a happier man.

I've had issue with my SIG516 Gen2 shooting WOLF .223 ammo. I was extremely disappointed due to constant FTF and short stroke. It seems like the WOLF doesn't generate enough pressure to complete cycle of the BCG and therefore FTF.

This weekend I bought with me.

1. Federal Target .223 FMJ 55 grain (cheap bulk)
2. Federal American Eagle .223 Flat Based Hollow Point 50 grain
3. Remington UMC .223 FMJ 55 grain
4. Federal American Eagle XM193 5.56 55 grain

The SIG516 didn't have any issue on "Position 2/Normal" with #1 or #2. So I didn't get to try #3 or #4.

I just build a DI AR with Daniel Defense 5.56 barrel and it just goes round after round after round on the WOLF ... I guess WOLF just doesn't work well with the SIG516... so when SHTF ... she''ll feed her AR all the cheap ammo? LOL
If you want to shoot the cheap stuff you varmint ammo, just install a non-mil-spec lighter weight buffer spring.
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Old 11-27-2012, 01:07 AM   #45
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A rifle of that price point and assumed Sig quality of the 516 should not have those types of problems. Sig needs to make this right for you.
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