strongbow67
NES Member
How long does a set of gas rings last in general? mine no longer pass the test after approx. 800 rounds
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Ar 15 gas rings
- Thread starter strongbow67
- Start date
strongbow67
NES Member
They do not pass the test where you extend the bolt and stand it on end it should not collapse into the bolt carrier. Other wise it shoots fine. I have done a lot of rapid fire practicing for three gun would the heat affect them?
I absolutely abused a stag arms model 2 carbine. Nothing but steel case ammo , mag dumps, minimal cleaning. 3000+ rounds before I sold it. My friend has continued the trend.
That said old ret marine at my club says dump a new set every 3k rounds.
There are probably thousands of .mil service rifles that have not replaced them after with a couple K rounds through them that work fine.
dcmdon
NES Member
I have a $100 BCG from AIM Surplus that failed the same test within 200 rounds. It continues to work fine. Its in a "toy" AR so I'll keep using it until it either fails or I buy a bunch of gas rings and replace a whole bunch of them.
strongbow67
NES Member
The whole gun is a m&p 15t it has ran flawlessly to date I am going to get some new rings and run it until fail with the old rings
warwickben
bubba Kalashnikov
Never heard about this gas ring test.
Is this legit or some internet thing .
Is this legit or some internet thing .
warwickben
bubba Kalashnikov
What do you do if you don't have gas rings?
http://www.cpi-va.us/docs/M16Manual.pdf
Refer to TM 9-1005-319-23&P (page 3-13)
You are not supposed to put the bolt face on the table and see if it collapses into the carrier. You are supposed to assemble it and hold it so the bolt face is pointed down towards the ground. The test is whether the bolt assembly drops out of the carrier due to its own weight.
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icyclefar
NES Member
In your particular case, I would say 799 rounds
warwickben
bubba Kalashnikov
I got a piston ar
take your gas rings and intentionally line up the gaps and you'll find that it works fine. the gap alignment theory is totally bogus.
That's correct. You should have to whip it out.
It happens. They wear out. It's an expendable part. Shoot till failure or just replace them.
strongbow67
NES Member
What's the consensus on rings are they all the same or some are better than others? I've looked at the mcfarland, seems a little gimmicky, are all the rest pretty much the same?
I do mine with a new extractor every 5k rounds. 5k rounds is $1,000+ in ammo. Surely you can spare $30 to swap some high wear parts and not let your rifle get into a failure mode.
Then again, maybe I'm the only person who changes my car's oil before the engine stops working.
Then again, maybe I'm the only person who changes my car's oil before the engine stops working.
dcmdon
NES Member
The test is a big vague. For example if I do it with dry rings it passes and with oil it fails. Also the other line of thinking is to do it the other way around: Sit the BCG on its rear and see if the bolt will drop into it.
I replaced mine at 2500 rounds or so. The BCG was failing the typical test but my ejection was still reliable and consistent, which would suggest they didn't need replacement. I prefer to err on the side of caution, rather than wait to start seeing short strokes. I'd hate for the first short strokes to be when I need the gun to work. I'd say 2500 rounds is safe, 5000 is probably fine, unless you start seeing weird ejection patterns.
