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12/6/2012 5:01:19 AM EDT
My AR carbine is short stroking on me. Brass ejects but bolt doesn't come back far enough to load next round. Which do I need to change out. Buffer or spring or both?
Or am I looking in the wrong area completely?
Thanks
King
12/6/2012 5:32:40 AM EDT
[#1]
How's the gun setup?

What kind of Stock/ Buffer Tube? CAR or Rifle?

Semi or Auto Carrier?

Buffer Type? CAR, H2 , Rifle  ....etc?

12/6/2012 1:00:37 PM EDT
[#2]
May also have a gas leak somewhere. Check the gas key.

Posted Via AR15.Com Mobile
12/6/2012 1:13:42 PM EDT
[#3]
Also check the gas rings on the bolt (3 split rings) and make sure that the openings in the rings are NOT lined up together. They need to be spaced out around the bolt.
12/6/2012 6:13:31 PM EDT
[#4]
Clean it really well and run it wet.  See if it still does it.

Provide more details as previously stated.
12/7/2012 6:38:07 AM EDT
[#5]
Sorry for the delay. I stay busy.
Rifle: Upper/lower, Spike's tactical
Barrel is 16" and front of gas block to end of gas tube is 9". it has been moved back under the hand guard as to conceal it. I have not changed out anything else, ie BCG or spring and buffer.
Spring and buffer are orignal from Spikes. Buffer has ST-T2 lased on it and the spring is the orignal length.
Gas block has a good seal and no leaking around the barrel and the holes are alligned properly. Gas tube at gas block shows some signs of leaking but very little almost not able to tell discoloration on the barrel.
Gas rings are not in line with one another.
Polished the bolt with diamond compound where it rides in the reciever.
This mornings test was, pop but not ejections this time.

King
12/7/2012 6:57:48 AM EDT
[#6]
FOUND IT!!!
Hole in gas tube was not properly aligned and pressure actually collasped the gas tube where it was over the hole in the gas block.
Any places I can just buy a gas tube from?
Thanks,

King
12/7/2012 7:29:32 AM EDT
[#7]
ArmaLite has gas tubes ...

ArmaLite gas tubes
12/9/2012 7:35:07 PM EDT
[#8]
Quoted:
Polished the bolt with diamond compound where it rides in the reciever.
This mornings test was, pop but not ejections this time.

King


Why on earth would you ever 'need' to do some junk like that?
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