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9/13/2008 9:20:33 AM EDT
Well I purchased a Msar stg-556 about two weeks and today was the first chance I had to shoot it. I shot the first mag(30 rnd) and had no problems. during the second mag I had a stovepipe and a live round partially in the chamber. during the rest of the second, third, and half of the fourth(which is where I stopped) I had multiple FTEs and jamming of the spent shell and live round being shoved into the chamber together. The best way I can describe it is a double feed with one live and one spent shell. I suspect that the ejector spring is bad. I only fired a hundred rounds and had about 6-8 of these problems, and also tried putting gas setting on high and it jammed on fist shot. Any advice
9/13/2008 9:47:53 AM EDT
[#1]
Make sure you are using quality magazines. Try a different mag. What are you using when the malfunctions occured?
9/13/2008 9:56:55 AM EDT
[#2]
i was using 4 different msar factory mags. i doubt its the mags.
9/13/2008 10:21:04 AM EDT
[#3]
Sounds like too much gas. There isn't much you can do about that yourself, you need to call MSAR and they will have you send it in, and send it back to you working correctly.
9/14/2008 9:01:58 AM EDT
[#4]
It's an extractor issue.  Before sending it in, take the bolt out and stick an empty case under the extractor groove and push down on the ejector.  See if there's adequate tension and how well the extractor is grabbing the case.  You should also take the extractor off and clean behind it.  A small piece of brass shaving could be gunking up the works.  

If you don't detect any problems in that area on your own, you'll need to contact MSAR.  
9/14/2008 9:56:08 AM EDT
[#5]
I checked that when I was cleaning it when I came home. The extractor has the rubber ring around the extractor spring and there was nothing under the extractor itself, it was clean. The ejector has a lot of tension on it, I had to give it a good push in order to depress it. It may be getting too much gas as Royarms suggested, I think its cycling too fast and not giving the extractor/ejector time to dispose of the empties.
9/15/2008 4:14:17 PM EDT
[#6]
I know it sucks to have to send your new toy in and wait for seemingly forever to get it back. But when you do, you will be happy and realize you made the right choice compared to attempting to fix it yourself. You will save yourself a couple aggrivating trips to the range, and then have to send it back anyway.

If the extractor/ejector move freely with strong springs there isn't much that can go wrong there. The key is the carrier velocity has to be in the acceptable range. They will likely be making an adjustment to the gas key to get you working. It almost seems like they are tuned to run on no oil and a not broken in action, so some end up over gassed when the action is smoothed out. But I could be way off base, who knows.
9/15/2008 8:43:58 PM EDT
[#7]
What brand of ammo are you using?
9/16/2008 6:43:42 AM EDT
[#8]
Do you have a limited edition black STG-556?  They had a small batch of the first onees that had some issues just as you described, and they list on their homepage to return them for parts upgrade.

[ETA]  If you are having issues, best advice is to call.  They will likely have you send the rifle in and fix it under warranty.
9/16/2008 7:59:02 AM EDT
[#9]
The ammo I was using was federal Xm193, and no it was not a limited editional rifle. I talked to the guys over at msar and they told me to send it in and they will take a look at it. They said they have a 24 hour turn around which is awesome. Maybe Ill be able to take her back to the range this weekend and give it another go.
9/17/2008 5:29:34 AM EDT
[#10]
Send it in and be done with it !!!

I know it's a pain but it will be worth it.
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