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Sig 716 Problem

This is a discussion on Sig 716 Problem within the SIG Sauer Rifles forums, part of the SIG Sauer Forum category; First of all I'm not the idiot on youtube that posted 12 videos of himself whining about sig. I'm new to these forums and I'm ...


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Old 01-05-2013, 03:54 PM   #1
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Sig 716 Problem

First of all I'm not the idiot on youtube that posted 12 videos of himself whining about sig. I'm new to these forums and I'm sorry if I posted this in the wrong place or if this issue has been covered elsewhere.

Now then, I purchased a new Sig 716 yesterday with several boxes of ammo. All the ammo was expensive, brass cased ammo. I got home and broke the rifle down completely and did a extensive cleaning on the gun. Once it was complete I loaded up a mag with 5 rounds and put in the mag well with the bolt locked to the rear, I released the bolt and it went forward and chambered a round but it sounded VERY sloppy instead of slamming a round home into the chamber. In fact it didn't even fully go into battery... it almost did but it lacked about a quarter of an inch from being all the way. I then tried to manually eject a round and the bolt was completely locked/jammed into place and wouldnt move. I tried using the forward assist and put it all the way into battery but it was still locked into place and wouldn't move. I had to get a screwdriver and pry the bolt open to get the round out.

There is a guy named Spyke on youtube who was having the exact same problem as me, identical. However when he broke his rifle down and cleaned it the problem was eliminated and his rifle would manually cycle fine. Cleaning didn't do a damn thing for me.

So I tried it for the third time and of course the bolt was locked shut again. I am getting pretty pissed at this point. I throw on my hearing protection and go outside, point downrange and fire. Of course the bolt opens and ejects the case fine and locks to the rear. I then loaded up 4 more rounds into the mag, dropped the bolt and as always it sounded sloppy and weak and didn't go all the way into battery. I used the forward assist to move it up that tiny quarter inch into batter and took the safety off and squeezed the trigger putting all four rounds downrange without a single problem with the bolt locking to the rear on the last shot. The gun shot absolutely fine. I then tried a final time to manually cycle rounds and to no avail it still wouldn't and I had to pry it open again.

Can anyone please help? I love this gun and I worked very hard and paid $2100 (tax and all) for it. I really want it to perform flawless. Had anyone had this problem before? Any remedies? Any tips? Thanks in advance and sorry this was so long winded.
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Old 01-05-2013, 04:22 PM   #2
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I don't have my rifle yet, but there are lots of folks mentioning a "breaking - in period," which seems odd for a rifle this expensive.
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Old 01-05-2013, 05:16 PM   #3
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It's just strange... I don't understand what would be causing the bolt not to ride all the way forward and why the charging handle gets stuck and the bolt won't manually extract a round...
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Old 01-05-2013, 06:23 PM   #4
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Has there been any unusual scoring / rubs in the receiver?
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Old 01-05-2013, 06:52 PM   #5
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Keep the info coming

I have a SIG-716, and like my 556 I have not had any issues. But the info you share may be an issue that someone else is having. So everyone can benefit if we continue to share info. The quacks like that dude on utube in the boony hat that fabricates all the so called defects from his brand new Sig products will be exposed anyway. He must be pissed because Sig is selling "the you know what" out of their excellent selection of hardware.
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Old 01-05-2013, 07:31 PM   #6
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The first thing I'd suspect is a weak/dirty buffer spring. There's obviously not enough force from the spring to propel the BCG forward from the locked position. Check your spring and buffer and if you didn't do it he first time, give them a good cleaning and lube. Also make sure the tube is not dented or warped/bent.
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Old 01-05-2013, 07:36 PM   #7
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I want a Sig716 - if I could find one - but I want one that works. Thanks for the info!
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Old 01-06-2013, 03:25 PM   #8
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IronKnight, thanks for the info.... this is my first AR that I've actually broke down and cleaned and used often. I had two before this but I ended up selling them before I spent a lot of time with them. Can you detail where the parts you spoke of are, how to clean them?
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Old 01-06-2013, 03:26 PM   #9
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I'm sorry... it was LongShot not Iron knight with the info about the buffer spring. lol
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Old 01-06-2013, 03:37 PM   #10
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Quote:
Originally Posted by Winteriscomingxii View Post
IronKnight, thanks for the info.... this is my first AR that I've actually broke down and cleaned and used often. I had two before this but I ended up selling them before I spent a lot of time with them. Can you detail where the parts you spoke of are, how to clean them?
You will find details of the Buffer Assembly on page 63 of the Sig716 Owners Manual.
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Old 01-06-2013, 03:56 PM   #11
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Thank you Sir
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Old 01-06-2013, 04:01 PM   #12
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Why did you need to clean a new 716? The OM says to clean the bore and any exposed mechanism of excess oil. Now you will not know if Sig made a mistake or you screwed up. I doubt if a problem like this would have passed factory inspection. All of my Sigs, 522, 516 and 716 were cleaned like the OM said and I have shot thousands of rounds WO a problem. Did you over-grease the bolt carrier by mistake? Many people screw up the same way. A very light oiling is all it needs. You can go to Armalite's website and download dozens of tech notes that can explain most problems.
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Old 01-06-2013, 04:14 PM   #13
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Quote:
Originally Posted by 4wheeldrift View Post
Why did you need to clean a new 716? The OM says to clean the bore and any exposed mechanism of excess oil. Now you will not know if Sig made a mistake or you screwed up. I doubt if a problem like this would have passed factory inspection. All of my Sigs, 522, 516 and 716 were cleaned like the OM said and I have shot thousands of rounds WO a problem. Did you over-grease the bolt carrier by mistake? Many people screw up the same way. A very light oiling is all it needs. You can go to Armalite's website and download dozens of tech notes that can explain most problems.
I break down and clean all my guns before use. Plus there are quite a few people who are having feeding and cycling issues with their 716 (while shooting, not while manually trying to cycle the gun) who have said it was because Sig ships their rifles with a ton of thick lube in the bolt carrier that needs to be cleaned out first. I am not having any of those issues while shooting, the gun shoots like a champ and the bolt locks to the rear every time Im out of rounds. I just can't load and manually unload the gun without the bolt locking up and not going all the way into battery then a round gets stuck in the chamber.

Also I don't know if I mentioned but I tried to load and manually unload the rifle before I ever broke it down and it had this problem before I ever even popped the pins out of the gun so it's Sigs problem for sure. Like I said... there is a guy on youtube names Spyke who was having the exact same problem as me with his 716 and cleaning the bolt carrier and bolt fixed it for him. Not for me.
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Old 01-06-2013, 04:16 PM   #14
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This is the problem I am having.
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Old 01-06-2013, 05:41 PM   #15
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I know what you mean by a stuck bolt now. IF you fit a round in the chamber, will it fall free if the rifle is sat on the butt? I have see too tight of chambers. And I know about the thick grease on the BC. I thought mine was a little thick compared to my 516 BC. But, I left it alone and still broke the gun in anyway. It was about 15 degrees outside also. It still cycled WO problems. I look at it this way, gun builders know how to make guns and also know the correct lubes and the correct amount. But, even the best builders still get tired and screw up too. I cleaned the BC after shooting about 60 NATO rounds and relubed with Wilson Combat grease. It felt the same thickness as the factory lube. Try this as I just did on mine, If you lock the bolt back WO a round, does it slam shut hard like it should when you release the bolt? This will tell you if you have a buffer problem. I suspect you have tried this already though.
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