Wrap your head around this shooting problem.

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copeland

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I did a course a few months ago. My gun had a serious jam, couldn't get the charging handle back to save my life. When we did hammer free (butt strike to the ground). There ended up being nothing ejected (though I can't elinate small debris). This would eventually lead to the trigger locking solid in the fire position.

I did have a couple double feeds leading up to this.

Moving on. I then had the hammer lock back, lock the trigger so I couldn't fire and stop the safety from being engaged. I was able to free it by getting a car key to release whatever the hammer was hung up. Got back up and running for a couple hundred rounds.

Today load up, same problem. Double feed. Clear it, and then I'm single feeding. Rack the charging handle it ejects the round, feeds a new one and shoot. Then nothing.

Rack the charging, live round pops out, charges new round, fires that round, then nothing.

Same thing over.

The rifle fires a round, ejects the empty casing, and then fails to fire.

I tried four different Pmags. Same problem.

I try a cmore mag. Same problem.

I was running norinco ammo. Had a few light primer strikes on the rounds I was manually ejecting.

Ran AE 223 in Pmags. Same problem

Ran norinco 62 grain in cmore mag, pmag - same problem.

I have my ammo to other guys, fired fine, buddy fired the light primer strike rounds no problem.

I switch rifles. SAME PROBLEM.

I borrow a full auto BCG and it jams half way between the chamber and in the buffer tube.

I ran every mix of options. Only thing I can think is swap in a new trigger spring kit.

OR I run ASAP mounts on both rifles did I do something wrong to cause the bcgs to have issue entering the buffer tube? I can rack the action with my semi auto BCG all day without issue though.

Thought??
 
I had some issues with the Norinco .223 getting jammed in the chamber of my rifle with the bolt not completely forward. Couldn't pull the bolt back with the charging handle, but was able to push the bolt forward with the forward assist and fire the round, which ejected the spent case. Probably not the best idea, but didn't want to mess around too much with a live round stuck in the chamber.

Your issue sounds a bit different though. What upper/lower do you have?
 
I ran a bushmaster upper on a stag

And a lmt10.5 on a rra lower


I used norc 55 gr. norc 62 gr. and AE 55 gr.

Thought it was ammo but i tried three types. And I let others run norc through their rifles. No problem. I'm fairly confident ammo was not the issue
 
copeland said:
I did a course a few months ago. My gun had a serious jam, couldn't get the charging handle back to save my life. When we did hammer free (butt strike to the ground). There ended up being nothing ejected (though I can't elinate small debris). This would eventually lead to the trigger locking solid in the fire position.
Click to expand...

Strip your fire control group down and clean it. You likely have a spent primer as Stevo suggests or other foreign debris playing havoc with your rifle.
 
I had this happen, my disconnector spring was lost while I assembled my trigger group, I was new to ARs so I didn't notice it. Maybe it is bent or something, it could cause the hammer to not lock back so the second round wouldn't fire
 
What has changed from recent past when the gun was working fine, to now, when the gun is not.
Gas tube fouling
Broken part(s)
Barrel change
Lug recess too dirty
Ammo/Mags
Extractor spring
Ejector

So many possibilities, it's worth a detailed analysis. Sometimes in frustration we, or I for that matter, miss something crucial. It's worth starting from scratch and checking everything very closely, making sure everything that should move is moving, and that what should be straight is straight etc...

It's worked for me in the past.
 
Am I reading this correctly, it is two completely separate AR’s of yours that are having the same problem? When you have a fail to fire is the hammer dropping? Are you saying the hammer was stuck forward (fired), or stuck cocked, or booth during separate occasions? When the rifle does fire does it complete its cycle fully, then you have a light primer strike? Have you removed (or installed) the trigger groups on the two rifles?

I would start with removing the trigger groups, fully inspecting them, and then reinstalling them carefully insuring everything goes in correctly.
 
When the rifle fails to fire, is the trigger reset or stuck to the rear? Can you pull it and does anything happen when you do? Pop your upper off and cycle the trigger manually by hand watching it for abnormal operation. If it seems good then take it apart and inspect everything. Debris, broken or missing parts or incorrect assembly could be the culprit so eliminate them all. You said it was clean prior to this, did you have it apart to clean it?
 
Ive read about a similar problem when using the 5.56 in a .223 chamber (Norinco is actualy a .556 FYI)

GL getting that figured out.

I'd check all the parts to see if anything is "shaving" off anything (Be it brass or something metal)

+1 to obove.
 
it sounds like your hammer is not catching and its just riding the bcg back up. The light primer strikes are normal because of the momentum of the firing pin when your bcg slams forward. Definately check your fire control group. Take the whole thing out, take it apart, clean it and put it back in.
 
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