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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; Hmmm, I have only had the chance to run 100 rds thru mine. PMC 55gr. Had no issues. Ammo is so hard to find dont ...


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Old 01-13-2013, 11:08 AM   #61
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Hmmm, I have only had the chance to run 100 rds thru mine. PMC 55gr. Had no issues. Ammo is so hard to find dont know when I will be able to run different brands thru it. Sucks really.
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Old 01-20-2013, 10:38 PM   #62
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Fast Eddie is mean
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Old 01-21-2013, 07:58 PM   #63
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I called Sig and the assured me the 516 is compadible with BOTH 556 and 223. I have Friday off and plan on shooting a variety of brands and grains through it.

I can accept not shooting steel cased crap such as Wolf; however, I expect to be able to shoot all brass cased 223 and 556. If yours has issues, send it back to Sig and force them to fix it.
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Old 01-22-2013, 11:33 AM   #64
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Unhappy

I have a 516 in OD green purchased Dec 2012. I took it to the range and had the same issues above using Remington UMC 55gr ammo. Called them and they said clean the gun and make sure it is lubed. I did a thorough cleaning and used quality gun lube. Back to the range...same issues!!!

Sent it to Sig and they returned it within one week - polished feed ramp, polished chamber, and "cleaned up" trigger (all of this per the notes in the box).

Went to the range today - same crap!!!! First 20 rounds went well though.

Called Sig and was told that maybe I should use 556 ammo......my response was maybe you should mention this in the sales brochure, website, or manual. If they did I would not have purchased the gun!!

In the end I got another return label and sent the rifle back (2nd time going back). This totally stinks for a pricey gun. Should've kept my SW MP15 I sold for the Sig.

Hopefully Sig will make this right. I am a loyal Sig customer and have a 232, 238, 239, 226, and 220.

Last edited by elchino; 01-22-2013 at 11:39 AM.
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Old 01-23-2013, 03:29 AM   #65
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Put 500 rounds of 556 thru it 1st and make sure you keep it on normal gas setting. Some rifles run like tops right out of the box and some dont, I guess the tolerances may vary from some production runs. Afterwards try some brass 223 on adverse for a mag or two, then switch on over to normal and run more brass 223 thru it on normal, I bet it will run like a top on the 223 now.Thats what I did, I tried to run 223 1st then read here to do as I have described and it worked for me. Sigs seem to becoming off the line w/some pretty tight tolerances and the 556 seems to loosen the rifle up quite a bit. You can run the 223 on adverse with out damaging the gun according to Sig.They state only damage that will occur is when the gun begins to run like crap on 556 and you switch over to adverse and continue to run a lot more (they quoted me more than 300 rounds of 556 on adverse may cause damage,and also said YMMV on the amount of rounds before damage, some take more and some take less) The CS at Sig is decent and they will try their best at making things right, but I try like hell to see if I can work bugs out 1st before I start sending it back, thats just me.Theres a lot of guys here that will advise to the best of their knowledge on working out the bugs, and I trust them, I took their advice on mine and it worked for me.good luck with getting that badboy running like it was made to!

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Old 01-24-2013, 06:39 AM   #66
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I appreciate the advice and may just do that when it comes back to me again. I just can't find any 556 ammo (i am in south florida). I have 600 rounds of 223 on backorder from cabela's.

If I can find some 556 I will gladly order and try it. I really like this rifle, and if it works right I know I will love it!
Any thoughts on whether the recoil spring could be the issue here? A friend suggested I try a different one in case this is the reason the gun isn't feeding/cycling. The 516 is a mil-spec correct? I found a ciouple of mil-spec springs for under $10 and would be willing to give it a shot - but if it is completely crazy to think the spring could be the issue let me know!

------

Which is the adverse setting? I have four dots on mine and it is set to 12 and 6 Oclock which corresponds to dot #2 on my gas setting.

The fourth is actually an X. Is adverse setting 1 or 2? When I set it to 1 it fires a single shot only and I have to pull the charging handle to load another round.

What setting is the third dot?

Last edited by elchino; 01-24-2013 at 09:02 AM.
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Old 01-24-2013, 12:35 PM   #67
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Quote:
Originally Posted by elchino View Post
Which is the adverse setting? I have four dots on mine and it is set to 12 and 6 Oclock which corresponds to dot #2 on my gas setting. The fourth is actually an X. Is adverse setting 1 or 2? When I set it to 1 it fires a single shot only and I have to pull the charging handle to load another round. What setting is the third dot?

http://www.sigsauer.com/upFiles/CmsC...ev080910LR.pdf
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Old 01-24-2013, 12:54 PM   #68
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thanks. this is what my manual shows but my gas lever doesn't look exactly like this. the button I have on mine is on the left side of the rifle.

the marking on the 2.1.6.c. that indicates the position is not present on my rifle side but at the top. once my rifle comes back from sig i will post a photo of it. this is what confused me when i read the manual.
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Old 01-24-2013, 02:11 PM   #69
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i found these online. this is what my rifle looks like. Is adverse the setting marked "large?" Out of the box it was set as shown in the picture.
Attached Images
File Type: jpg SIG516GasSettings.jpg (106.9 KB, 65 views)
File Type: jpg [UNSET].jpg (113.3 KB, 50 views)

Last edited by elchino; 01-24-2013 at 02:17 PM.
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Old 02-03-2013, 07:43 AM   #70
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well got my rifle back from sig.

they state that 3 shooters shot 30 rounds each using aguila .223 55grain ammo in the magazine i sent without fail!!!!

according to the note: "The malfunctions the customer is having is either ammo related or shooter induced"

Can someone tell me how it could be shooter induced? What could I be doing wrong?

I found it interesting that over the phone they told me to use 556 ammo or 62 grain 223 ammo but they tested it using 55 grain 223 (They even included the box top in the return shipment).

I will try a different batch of ammo this week - but if it keeps happening I can say this will be the last sig rifle I buy.
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Old 02-03-2013, 10:17 AM   #71
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Well I just ran an assortment of different brands of ammo as well as .223 and 5.56. Different grains as well. 300 rounds total, just today. Also shot from 35 yards 100 and 200 yards. NOT a single problem. This AR eats everything. A hell of a lot better than my Bushmaster back in 98. Way to go SIG!!!! And I wouldn't know why folks are having a problem with there 516's.
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Old 02-04-2013, 02:07 AM   #72
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maybe you should take a video of the problem actually occuring & email that to them. Make it undeniable and obvious in the video and they'll take care of you.

Im sure if theres a problem with the rifle they will make it right.
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Old 02-05-2013, 05:15 AM   #73
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I just ordered 100 rounds of PMC 5.56 which I will run through it after a cleaning and lube. I will use EWL instead of CLP this time.

Hopefully, all of this will make the difference. I am thinking it should be almost broken in with the 100 rounds coming. I have shot about 150 rounds through it, and Sig shot 90 rounds through it so by next week it will be ~ 350 rounds.
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Old 02-06-2013, 10:37 PM   #74
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Failure to feed junk

Guys,

I purchased a new gen2 sig 516 and it will fire 5.56 find. However 223 ammo simple fails. I did research and called sig and was told on anything 55gr or less to switch the piston to adverse conditions. I had the sig rep confirm what he was stating again as it says clearly in the manual not to operate the gun on this setting for extended periods of time. I returned to the range with the same results. I attempted to explain in my previous call to sig that if I manual cycle a round in and out of the chamber via the charging handle the bullet is scored pretty good every time in the exact spot. The sig rep gave me a BS response in that sig doesnt care what happens when I manual feed a bullet they are only concerned with what happens when it fires. Its very clear this is a company wide problem based on the posts all over the internet. I'm going to call sig again and demand a RMA to have the feed ramp polished where it clearly lacked a factory QA test. Ill keep everyone posted on how well sig handles this. I have and own multiple sig fire arms and if they dont get this resolved promptly it will be my last. This is not the quality or customer service one would expect from a decent company. If it was just me I would think ok However, all over the internet Sig is being slammed on this type of issue and their first response to clients such as clean the gun etc... I'm gonna keep my fingers crossed that sig does whats right. Its very clear on my gun the feed ramp is the issue and when I shoot 556 it has enough power to pass right on through this rough spot.
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Old 02-07-2013, 12:30 AM   #75
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Please let us know how it turns out.
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Old 02-11-2013, 07:43 AM   #76
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Just got back from the range and it went much smoother.

Cleaned the rifle really well this weekend, then lubed with EWL.

Here is my range report in order of ammo used:

PMC X-TAC 5.56 62 Grain - 60 rounds - 1 FTF. It loves 62 grain ammo - cycles and feels really good when I used this.

Remington UMC 223 - 20 rounds - 10 FTF (same as prior range experience - just hates Remington UMC ammo!!!)

CBC Ball M193 5.56 - 100 rounds 5 FTF

American Eagle Tactical AE223 - 20 rounds no issues

Very accurate rifle but I have listed it on Gunbroker for sale. I love the gun but hate that it will be so difficult to find ammo it likes and at the current prices it is pretty expensive for me to enjoy. I accept it is a milspec rifle and as such it loves 556 spec ammo but my wallet is not going to like it in the long run. I may end up getting another AR platform rifle if I sell it.

I love Sig and have a lot of their handguns and had hope to one day have another Sig rifle just not the 516. I appreciate the advice everyone gave me on this issue and you were honestly more helpful than Sig Sauer.
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Old 02-11-2013, 10:14 AM   #77
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I hear so many here have the issues with the 223 ammo when all one has to do is switch the regulator over to adverse, the rifle will eat it like a starving 3rd world country kid.I can attest to it and it will not ruin the gun if your shooting 223 thru it. The manual states that running in adverse for a period of time could hurt the rifle YES that is true if your running 556 thru it and your on adverse, but not so with the 223, thats the beauty of these rifles, if there isnt enough pressure flip the regulator switch on over to adverse which will allow lower pressure ammo to run due to regulator allowing more of the gas pressure to enter to cycle the bolt. I dont shoot steel thru any of my AR platforms guns, just me so i cant tell you if any commie bloc steel will cycle on the adverse setting but i do know my rifle didnt like the UMC on normal, but cycled fine on adverse as well as other 223 ammo that didnt fare well on normal setting but loved the adverse stetting. Sig has reassured me that if shooting 223 run it on adverse,556 run it on normal.
Also,after the gun had anywhere between 3-500 rounds thru it, it started to cycle fin on normal w/223 ammo. the majority i think are just very tight tolerances and need to be broke in w/mil spec ammo(556)if i were to base my guns 1st outings on whether it was a keeper, this one would have been gone.i think some of these have QC issues but for the most part, i think its just gets down to breaking them in.Its used now, spend some bucks on 223 (if you can find it and reasonably priced) and go shoot the fug out of it on adverse, after 500 rounds i bet when you switch it on over to normal, it will cycle the 223.Mine was the same way and afterwards she came around, runs super clean and is a tack driver on a bench with match grade ammo and now will eat anything i feed it.
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Old 02-11-2013, 12:27 PM   #78
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Thanks for the advice. I am probably at 400 rounds at this point (assuming Sig really did shoot 90 rounds as they said).

I might go ahead and try it again on adverse - I have about 700 rounds of remington UMC at home. Is the adverse setting the one depicted by the largest opening on the piston?

When this thing shoots it is wicked accurate even without me properly sighting it etc. so would love to keep it around. I am convinced the only thing I can do is keep shooting, cleaning, lubing it till it works or sell it - sending it back to Sig again would be useless. I would hate to sell it after all the trouble only to hear from the buyer how well it eats ammo!!!!
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Old 02-11-2013, 02:02 PM   #79
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Yeah bro, feed it some more of what ever you can get your hands on(minus the steel,just me) and use the settings as described (and yes the largest hole on the reg. is the adverse setting) be patient, it will loosen up a bit and I bet you'll be able to run what ever you want on normal.If not, I had a lot of fun with the RRA company and their AR 15 elite operator that I had was sweet.Ate anything you fed it from day one.Most of the DI guns do eat anything you feed em,no objections from that platform either.Both op systems have their + /-'s both are great systems,I just favor the piston more.

Be patient and try to run at least a total 1k rounds thru it, if it isnt right after that many rounds,It would be safe to say its definitely a QC issue!! and needs warranty attention big time!! or you can sell it and be done with the Sig piston rifles, and move on over to the DI guns, they eat almost everything including the kitchen sink!
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Old 02-25-2013, 03:53 PM   #80
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Picked up another 516 yesterday Date on box is 1/16/2013 and shoots everything I feed it not one problem today with 300 rounds in normal pos. I keep it wet. 223/556 no matter. Both of mine have been dead on sights and no problems feeding.
PMC Bronze 223 Remington 55Grs.FMJ-BT
PMC 556 XP193 X-TAC

Last edited by Trotter; 02-25-2013 at 03:57 PM.
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