AR15 extraction/ejection problem
- Thread starter Gatehouse
- Start date
Gunnerlove
CGN Ultra frequent flyer
- Location
- Vancouver Island
The BCG is part of the gas system (gas rings). Getting it to consistently lock the bolt back after a single round is the easiest way to eliminate the gas system as an issue.
Now you know that the issue is with the BCG.
Damn I don't see the pin that goes into the spring which makes me think that it fell out when I opened the envelope, disappearing forever. Can the spring and I ring still be installed ? Or is the pin required to clip in the spring? I'm going to start looking with my magnifying glass....
its in the little plastic bag. spring, pin, oring, extractor. you need that pin, it guides the spring.
I'm sure it WAS there...but when I opened the envelope the spring (and I assume the pin) were loose. Only the extractor and oring were in the plastic bag. The spring fell out and I saw it but I guess I missed the pin. Maybe Canada Post was a little rough ! 
Anyways, I installed it and it works, but I'll order another pin. Unless I miraculously spot it...Once again I am very grateful. Thanks Mike!
Anyways, I installed it and it works, but I'll order another pin. Unless I miraculously spot it...Once again I am very grateful. Thanks Mike!
The saga continues.....
I've got the new BCG installed and the gun goes bang bang bang no problem....then another jam. I pull out magazine and pull back bolt handle and the bolt refuses to close, gets about half way. I look at it and the hammer pin is gone- broken. I find half of it sitting on the table.
So I get a new hammer pin and reinstall hammer......bolt won't close unless I have the trigger pressed down. Remove the hammer and place the uper and lower together- bolt moves without resistance. It's definitely the hammer getting in the way.
So I'm thinking that either something is very wrong or worn or there is some sneaky AR15 hammer/spring installation technizue that I don't know about. The rifle is a Norinco with about 5000 rounds through it.
It also is giving indication that it may fire out of battery if trigger is pressed. Almost like shooting from an open bolt.
Upon inspection, it appears that the hammer is not getting locked back by the trigger. Which is odd as I havent touched the trigger
I've got the new BCG installed and the gun goes bang bang bang no problem....then another jam. I pull out magazine and pull back bolt handle and the bolt refuses to close, gets about half way. I look at it and the hammer pin is gone- broken. I find half of it sitting on the table.
So I get a new hammer pin and reinstall hammer......bolt won't close unless I have the trigger pressed down. Remove the hammer and place the uper and lower together- bolt moves without resistance. It's definitely the hammer getting in the way.
So I'm thinking that either something is very wrong or worn or there is some sneaky AR15 hammer/spring installation technizue that I don't know about. The rifle is a Norinco with about 5000 rounds through it.
It also is giving indication that it may fire out of battery if trigger is pressed. Almost like shooting from an open bolt.
Upon inspection, it appears that the hammer is not getting locked back by the trigger. Which is odd as I havent touched the trigger
Last edited:
IIRC the service life for that rifle is 6000 rounds as stated in the manual. IMHO I think this is more barrel life -as in gas cutting at the gas port getting bad.
However there are other wearable points/parts.. like the hammer/trigger pins and holes, the gas key, the bolt/extension lugs and all the bolt parts under stress, etc.. that may or may not start to cause issues. Perhaps these issues would become apparent more quickly on the more economical brands?
You could run a bore scope, or pull off the gas block and look at the condition.. and take apart your bolt to check for wear... change the gas rings maybe? I bet you there are lots of tired parts in that upper
