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Discussion Starter · #1 ·
Just purchased a SIG516 gen 2 in FDE, and I really want to love this rifle. Problem is that I have fired 300 rounds so far on two separate occasions, and with every magazine there have been issues.

Issues:

1.) Rifle will not cycle the next round
2.) Bolt does not lock back after last round
3.) FTF, FTE

Let me also add that upon receiving the rifle it was thoroughly cleaned and lubed. I checked to make sure that the normal operation setting was engaged (12 o'clock position)

Ammo:

One day I used PMC 55 grain .223, and the next day I used PMC 55 grain 5.56

Customer Service:

After telephoning Sig's CS, I was told that the rifle needed to run in adverse conditions to properly cycle 55 grain ammo. Is this the case? The manual states not to operate in adverse conditions for long periods of time. Is this a case of bad ammo? My friend purchased a Spike's Tactical ST-15 the same day, and his embarrassingly fired off every round no problems.

Any suggestions? Is this just a bad rifle that I should send back to SIG for repair? Does anyone have experience with this level of unreliability?
 

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I. 'll be watching this thread,I have a 516, but haven't fired it yet,but just ordered a 1000 rounds of 55 grain federal.
 

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I shot 55 grain federal without any issues. I have a second generation as well and I shot it for the first time yesterday. My settings are the same.
 

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I also have a 516 gen 2 FDE, and all I really shoot is 55 grain PMC or UMC. I havn't had any problems at all. What kind of mags are you using. Are the rounds all seated properly to the rear when in the mag? If using old mags try to take the spring out of the mag and inspect. Also I only operate in the 12 o'clock position unless suppressed
 

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Thats a 1:7 twist barrel on the sig right? Is the 55-grain a tad lighter than Ideal? Either way I doubt if the ammo accounts for your problem. That speaks to projectile balistics not your cycling issue

I too will be watching this thread. I planned to get a 516 soon and have 5.56 Nato 62 and 75 grain federal, hornady and PMC's waiting for it that my colt shoots fine enough.
 

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Hey zombie spice,

Im having the same problem with my brand new 516. My thread is right below yours named "New 516 wont cycle". So far I have been advised to clean it and try again. I could only get it to cycle in the adverse setting. I will clean and try again and post back when I have some results. Let me if you find another solution.
 

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I posted earlier that I did not have any issues with my new SIG516. I only put 60 rounds in it on Monday. I am planning to go to the range this weekend and I will report back how it goes. I will be shooting 55 grain American Eagle.
 

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Discussion Starter · #8 ·
Thanks for the input. I am beginning to think this rifle should go back. Brand new Pmag, and yes I always have the habit of tapping the mag after full to make sure all rounds a seated well.
 

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Discussion Starter · #9 ·
I Hope this is not a sign of things to come with SIG's CS.

First, I was told to run the gas piston on its adverse setting. A setting reserved for when the weapon is muddy (like the great youtube video we've all seen), or excessively dirty after many rounds without cleaning. The same setting that the manual warns of operating for long periods of time.

Now you were told to clean the rifle and that would solve your problems.

I just wish, and this goes for a lot of gun manufacturers, that they acknowledge that many firearm owners are: intelligent, responsible, and informed. And that they don't dismiss our legitimate concerns with cookie-cutter responses like "Oh you just didn't clean the firearm", "You were using bad ammo", "operator error", blah blah blah.

As I am a total pacifist, and hate confrontation, anyone have any suggestions on how to handle my second call to SIG?
 

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If you call them just simply ask if SIG still stands behind their product. If so make them give you a RMA number to get your rifle fixed.

As everyone knows, it hard to build a good reputation but it is easy to ruin one. If the people at SIG are smart they will own up this problem.

Just my two cents.
 

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I just ordered a 516 FDE ... I'll be watching this string with interest.
 

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I was having the same problem with my new 716 Patrol, and getting the same responses out of Andy at Sig customer service. After three cleanings, three range trips, a new cleaner and lubricant, and 140 rounds of assorted 7.62x51 and .308 cartridges, the rifle appears to be working properly now. It needs more rounds to verify, but I'm cautiously optimistic at this point. I did get an RMA number on my second call, as well. See the thread on the 716 not cycling properly for my story.

Initial quality for SIG seems to be a problem with some new models. Reference the cycling issues on new Mosquitoes a while back, the product advisory on the P238 when first released, and some of the current stories of new P938s going back for new extractors and feed ramp polishing in order to function, along with loose grip screws. This kind of stuff should simply not happen on brand new weapons.

I'll avoid new Sigs for a while, although I just plunked down some money for a good 'ole West German P226.
 

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Discussion Starter · #13 ·
I'll be going to give the 516 a third test run of another 300 rounds on Monday, so we'll see where that gets me. I have thoroughly cleaned the rifle (3 times now), and I am curious to see if the problems persist. I'll keep everyone posted.
 

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Hey Guys
Just to let you know my experience with SIG. I pought a Sig 556 Swat Patrol. liked it...after about 500 rounds the top rail came loose above the receiver. I called Sig...got a RMA within a couple days. The rifle was returned within aprox a week. It calimed to have the rail fixed...but I sent photos of the rail showing it was still out of line and loose. It also had some finish issues. SIG emailed me back within a couple days saying they would replace the rifle with a new one. I asked if I could upgrade it. They agreed to replace it with a 516 (and a few bucks).

I received a black gen 1 516 within a week. The rifle has had about 700 rounds thru it without any issues. I fire mostly 55 grain ammo...American Eagle, Federal, PMC....I went hog wild and did put some Black Hills Ammo thru it.

I have found the rifle to be a keeper. If you talk with SIG and discuss the documented issues...they will respond...just be sure you document your issues well and photograph any problems. I was going to use the 516 as a trade in on a SCAR 17.....but I liked it so much I kept the 516 and bought the Scar 17 too. There are a couple guys on the FN Forum that have bought the 516 FDE gen 2 and give it good reviews.
The 516 gen 1 and gen 2 both have had good reviews...but like every rifle....there may be some with defects....if that is the case...discuss it with SIG and I think you'll find them decent people to work with. They will help.

Good luck and I hope you'll get your problems solved. They treated me well and professionally.
 
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It's no secret that there are a lot of problems at today's Sig Sauer. This is not the same company that made the world's finest firearms 20 years ago.

Pound on customer service until you get the answer you want.
 

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I didn't get to spend much time on the range but I shoot 140 rounds this morning. I only had tow stovepipes at the very end. No FTF issues.

I used CLP to lube the bolt.

I was shooting American Eagle 55 grain. I tried cheap wolf ammo 62 grain and I had FTF issues.

I going to go back to range next week and I will report back.
 

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Discussion Starter · #17 ·
UPDATE

Just had my third operations test of the SIG516, as well as, my second encounter with SIG's customer service.

Test 3

First mag of 30 rounds 55 grain Federal went off without a hitch, but bolt did not lock back after empty. Next magazine was back to the issue of not cycling next round. After two magazines of the same old FTF and bolt not locking back on empty, I switched the gas setting to adverse conditions, put in a fresh 30 round mag, and angrily rapid fired every round without any issues (including the bolt on empty).

2nd Call To SIG CS

Nothing. The rep just told me to run the gun in adverse conditions on 55 grain ammo. Never acknowledging there is any issue with the firearm whatsoever, and never recommending to send it back to be checked. His advice was so easily given, it was as if this was the design intentions of the gas settings itself. Maybe SIG should have called it "55 grain ammo setting" and not "adverse". Because of Monday's holiday, I could not purchase any higher grain ammo to see if the normal gas setting will cycle properly. Stay posted.

Meanwhile, my friends' (we all purchased AR's together) Spike's Tactical and M&P Sport have been functioning flawlessly round after round.

FML.

Any Recommendations?
 

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Damn sorry to hear that. I was looking around on youtube and this guy had problems with his SIG 716 and he cleaned his bolt and used Remington oil. Perhaps try that?

I have to admit I am ****** my 516 would not load wolf ammo. I am going to try the Remington oil and see what happens.

In regards to SIG CS, point blank and ask them if Sig still stands behind their name. If so demand a RMA get it send back to SIG for repairs.
 

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Damn sorry to hear that. I was looking around on youtube and this guy had problems with his SIG 716 and he cleaned his bolt and used Remington oil. Perhaps try that?

I have to admit I am ****** my 516 would not load wolf ammo. I am going to try the Remington oil and see what happens.

In regards to SIG CS, point blank and ask them if Sig still stands behind their name. If so demand a RMA get it send back to SIG for repairs.
Steer clear of wolf brand ammo, it is known to be underpowered. This is the same for the SIG 716 and Mini 14. All other ammo works fine.
 

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On the 516 not cycling, It has more than one setting at the bottom of the piston in front of the gas block. One is for supressed fire,the other is without supressor. And I think there's an adjustment on the un supressed setting. maybe ite was played with before you bought it. try moving it and shooting in every position.
 
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