Norinco M305 Trigger Pack Issue (Update)

Mumbles Marble Mouth

Mumbles Marble Mouth

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My new Norinco M305 is firing the full magazine on just one squeeze of the trigger. First I used Federal Power-Shok and it emptied the 5 shots with one pull of the trigger. Then I tried Barnual. Same problem. Then I tried standing. While standing it won’t do it. So I tried holding the gun more firmly bench rested and still emptied the mag. Any suggestions would be great on how to fix this problem.

Another issue is if the gun is on safe, If I pull the trigger two - four times the gun will pop out of safe and fire.

This is my second Norinco M305. The first a 2012 and it would never do this no mater how I fired it. This one is a 2014
 
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Could it be bump firing

Ive had these rifles burb a few on a bump fire on the bench by mistake .


If you can make it "fire full auto" when its empty

Chances are its just bump firing


In witch case

Shooting technique is the remedy

Chances are if it was going full auto it would malfunction when shooting slighly out of battery


Full mag- probably a bump fire
 
do the after assembly tilt and trigger test. this is to see if the sear is catching as it should. hope this is not a trigger group that someone tried improving, they are easy to screw up. could be your trigger technique. when pulling the trigger, pull all the way back and hold. if you are too delicate, you will be holding it in the sweet spot for the sear, and the recoil will move your finger enough to release the sear. only load 2 into the mag to verify. best advise, send the trigger group to M14 Medic, then you know it is safe.
 
I had an M-305S did that to me on numerous occasions and I bought it back to CT to be sent out for the supplier to check and they sent it back after 3 weeks. According to CT , the supplier test fired it for 500rounds but we’re unable to replicate what happened to me. I sold the rifle after that as I don’t want to be in trouble if it happens all the time. Prior to me moving to Canada I did own an M-14 overseas and when I shot it on semi it sometimes would do a “doubling” of shots, specially when I mixed brands. I consider this instances to be “unsafe” , probably it’s a rare flaw of the M14 design. Don’t get me wrong but I enjoyed those times the M305 was doing those burst shots but it defeats the whole purpose of shooting accurately as 80% of rounds are in the air due to the hard recoil of the rifle
 
Do the trigger test to see if the hammer keeps following the bolt forward .This is a very important that it pass this test .

1. #### the action and then let it go forward . Apply the safety and see if it fires or not with the safety applied .
2. Then take safety off and fire the action and keep holding the trigger to the rear while cocking the action again.
The hammer should be staying to the rear at this time.
3. If the hammer has stayed to the rear after cocking the action when you finally release the trigger and you should hear a click and the trigger will be ready to fire again .
4. Do this a few times and make sure the hammer is locking to the rear and not following the bolt forward.

An out of battery or slam fire can occur with a rifle that fails this test .



Mumbles Marble Mouth said:
My new Norinco M305 is shooting full auto on me all the time. First I used Federal Power-Shok and it emptied the 5 shots with one pull of the trigger. Then I tried Barnual. Same problem. Then I tried standing. While standing it won’t do it. So I tried holding the gun more firmly bench rested and still emptied the mag. Any suggestions would be great on how to fix this problem.
Click to expand...
 
Sounds like a hammer follow problem.

It’s fairly easy to remedy, read chalkriver2’s post, if the rifle fails the test the solution is to remove a little bit of material under where the rear of the trigger group sits in the stock.

John
 
Can anyone tell me if this amount of engagement is okay for the sear reset? I just noticed when performing that trigger test, the trigger resets right away after letting off the trigger. Pulled the trigger group out to find that the hook for the reset barely holds.

28059068_10156772672432908_4651794975439320711_n.jpg
 
Mumbles Marble Mouth said:
Can anyone tell me if this amount of engagement is okay for the sear reset? I just noticed when performing that trigger test, the trigger resets right away after letting off the trigger. Pulled the trigger group out to find that the hook for the reset barely holds.

28059068_10156772672432908_4651794975439320711_n.jpg
Click to expand...


If that is the maximum rearward travel of your trigger, then you don’t seem to have enough engagement on the disconnector. If you close the trigger guard and snap it into place, does the trigger move back further?

John
 
Sometimes we ought to put more thought into what we post and how it is worded. There are a number of m14 experts on the board that can be reached via DM.


Just my 0.001c
 
m14medic.ca said:
If that is the maximum rearward travel of your trigger, then you don’t seem to have enough engagement on the disconnector. If you close the trigger guard and snap it into place, does the trigger move back further?

John
Click to expand...

With the trigger guard closed, the trigger doesn't come further back. I can see that I could file the back part of the trigger and then it would come further back but I am collecting more information before making a decision like that.
 
Mumbles Marble Mouth said:
With the trigger guard closed, the trigger doesn't come further back. I can see that I could file the back part of the trigger and then it would come further back but I am collecting more information before making a decision like that.
Click to expand...

Please don’t file anything on the trigger....

Even with that little amount of engagement, you still shouldn’t be having the problems you’re having.

Instal the trigger group onto the action with-out the stock in place.

Ensure the rifle is empty, check again, pointing the barreled action (rifle with-out stock) in a safe direction pull the trigger fully rear-ward and keep it pressed. You can see the hammer resting on the back of the bolt. Now operate the oprod fully to the rear while keeping the trigger fully depressed. Notice how the hammer passes by the trigger and gets grabbed by the disconnector (rear hammer hooks)? Now let the op-rod forward slowly while keeping the trigger pulled fully rearward. Does the hammer stay with the bolt (bolt follow) or is it still captured by the disconnector? If it’s captured by the disconnector and doesn’t follow the bolt forward that’s a good thing. If the hammer follows the bolt forward that’s a bad thing.

If it passes that test, then try it in the stock. If it fails then a little material must be removed from where the rearmost part of the trigger pack sits in the stock.

If you feel uncomfortable doing this box the rifle up and ship it to me, or someone else who is knowledgeable with the platform.

John
 
Mumbles Marble Mouth said:
Another thing I have noticed is when the gun is on safe, pulling the trigger two - four times will still fire the gun.
Click to expand...

Ah, well that’s a different kettle of fish. Either your trigger and hammer are FUBAR or the trigger pack is out of spec.

You either need a new trigger group or some parts.

I’ll bet that if you set the safety and pull hard on the trigger it won’t fire, but it will if you release the safety....

John
 
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