Bolt wont cycle

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12 years 3 months ago - 12 years 3 months ago #11974 by Macs-impala-ss
Bolt wont cycle was created by Macs-impala-ss
I took my fulton armory ar 10 out today and I got it to shoot a inch group at 150 yards. But it wouldnt cycle the action. I notice on the gas block there was a lot of black stuff right where the tube enters the block. My question is do i need to replace to tube and block?
Last edit: 12 years 3 months ago by Macs-impala-ss. Reason: grammar

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12 years 3 months ago #11976 by jtallen83
Replied by jtallen83 on topic Re: Bolt wont cycle
Depends on what "lots" is. You'll see some but lots sounds wrong. Search "gas block" on the site and you'll find some great info from real pros. I've read about gas ports not being lined up and causing your issue on all types of AR rifles so your on the right track, I think. :dry: :unsure:

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12 years 3 months ago #12018 by BUILDING MY SASS
Replied by BUILDING MY SASS on topic Re: Bolt wont cycle
I would say, remove the pin holding the gas tube in and remove the gas tube..you should be able to do it...and check to see if the tube is plugged...to me that is what it sounds like....
BMS

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12 years 3 months ago #12036 by LebbenB
Replied by LebbenB on topic Re: Bolt wont cycle

BUILDING MY SASS wrote: I would say, remove the pin holding the gas tube in and remove the gas tube..you should be able to do it...and check to see if the tube is plugged...to me that is what it sounds like....
BMS

I will disagree with this assessment. Gas moves down the tube at several thousand PSI, enough to clear any carbon build-up or obstruction. Given the gas pressures involved, a true obstruction usually spits or ruptures the gas tube.

From the OPs description of excess soot around the gas block, I'd wager that the gas tube is improperly mounted/seated in the gas block, causing a gas leak.

NOTE: Prior to popping the retaining pin out, have a new pin ready to install. Do not attempt to re-use the original pin. And, as always, if you do not feel mechanically up to the task, take the rifle to a competent AR gunsmith.

Leb

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12 years 3 months ago #12037 by BUILDING MY SASS
Replied by BUILDING MY SASS on topic Re: Bolt wont cycle

LebbenB wrote:

BUILDING MY SASS wrote: I would say, remove the pin holding the gas tube in and remove the gas tube..you should be able to do it...and check to see if the tube is plugged...to me that is what it sounds like....
BMS

I will disagree with this assessment. Gas moves down the tube at several thousand PSI, enough to clear any carbon build-up or obstruction. Given the gas pressures involved, a true obstruction usually spits or ruptures the gas tube.

From the OPs description of excess soot around the gas block, I'd wager that the gas tube is improperly mounted/seated in the gas block, causing a gas leak.

NOTE: Prior to popping the retaining pin out, have a new pin ready to install. Do not attempt to re-use the original pin. And, as always, if you do not feel mechanically up to the task, take the rifle to a competent AR gunsmith.

Leb


How Dare you... :laugh: :laugh: :laugh: :laugh:
Just kidding my friend...
You may be right...but from what it sounds like...there is some issue between A B and C...so to me the best place would be the Gas Tube and Block...just to double check...I have heard of blockage in the Gas tube from the factory...the excess of carbon and the lack of cycle means it is somewhere around the gas block or tube...possibly the Port itself...Lets hope not... :pinch:
but I say check the tube first then the block and then the barrel...something is restricting the gas flow...I know the specs as you do..but being it is blowing carbon out the gas block...means it is somewhere around that junction...being neither one of us have the rifle...it is hard to say...and I also Agree with you on the Gun smith....Most Definitely.
BMS

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