This is a discussion on Bolt assembly gas ring reliability issues within the SIG Sauer Rifles forums, part of the SIG Sauer Forum category; Originally Posted by Willard Guys OP stated this is a M400, and not a 516, it's gas impingement, not piston, that's why there is carbon ...
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|04-10-2017, 02:27 PM||#16|
Join Date: Sep 2013
|04-11-2017, 01:07 AM||#17|
Join Date: Jun 2013
Location: Iowa is home but I'm always travelling
The wear on both sides of the extractor in the first pictures is what caught my eye.
|04-11-2017, 06:08 AM||#18|
Join Date: Apr 2017
I got ahold of Sig Sauer customer service and they are sending out some new gas rings. I still am going to take it to the gun store to see if there is anything out of the ordinary since I am by no means a professional when it comes to this.
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|04-11-2017, 07:57 AM||#20|
Join Date: May 2013
I'm glad they are sending new rings for you. I love my M400.
|04-11-2017, 10:06 AM||#21|
Join Date: May 2014
Location: Valley Forge Pa
Are you aware that the 3 gas rings should be set up for their openings to be 120 degrees apart. If not move them to that position when you reinstall your bolt.
|04-15-2017, 07:59 AM||#22|
Join Date: Sep 2014
Please keep us posted on how those new rings work for ya. I mean, unless the rings are improperly installed, there's foreign matter in the bolt or a BCG problem - this ain't suppose to happen!
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