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Posted: 11/9/2013 1:59:55 PM EDT
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I finally got my new M70 N-PAP out to the range. It was fun to shoot and fed reliably, but something strange happened twice in the 60 rounds that I fired.
The gun would cycle and chamber a round but would not be cocked. I could pull the charging handle a couple inches back to visualize the chambered round, release the bolt, then be able to fire the gun. Any ideas what would cause this? |
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If its coming back far enough to chamber a round. It should be cocking the hammer. No?
Quoted:
Take the top cover off and rack the slide all the way back. Does it cock the hammer? It should. Your bolt carrier probably isn't getting driven backward enough to cock the hammer when you're firing. |
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Quoted:
If its coming back far enough to chamber a round. It should be cocking the hammer. No? Should be. If you've got hammer-follow it has a nasty chance of slam-firing, better check the primer on the round the next time it does it (if you keep shooting it which is bad policy until you figure this out). |
| I took the rifle to the range and experienced the problem again. The hammer does get cocked by the bolt and a round is chambered, but feels like the trigger does not reset. Simply moving the bolt back an inch allows the trigger to reset. I tried holding the trigger after each shot to feel for the reset and experienced the problem a couple more times. It didn't seem to matter how I shot, it would still happen randomly. I have about 200 rounds through the rifle with about 10 occurrences where there was no reset. I tried manually cycling and dry firing to see if I could duplicate it and have been unable to. The trigger feels like the safety is on, but it isn't. |
| It should. Your bolt carrier probably isn't getting driven backward enough to cock the hammer when you're firing.http://goo.gl/Z3g1EF |
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Quoted:
Make sure the legs of the hammer spring are correctly positioned on the trigger. +1 I recently bought a npap from cabellas (granted it was used but as in brand new condition) but it was missing a shepperd's crook and the axis pins for the trigger and hammer spring were not held in place correctly and slightly crooked. In any case I would not keep firing this weapon due to the chance of slam fires as mentioned above.... |
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Quoted:
The hammer is locked back when this happens. In all the instances, it has never ridden forward. The legs of the hammer spring are what reset the trigger(they provide pressure that pushes the trigger forward when you let your finger off of it, which resets the trigger). If they aren't positioned properly.. the issue you are describing can happen (trigger fails to reset). |
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I wonder if your hammer is getting stuck on the disconnector for some reason? That might cause what you are experiencing, and then by working the bolt a bit it might dislodge it and let the trigger hooks catch it normally.
ETA: wait, where did the front portion of your shepherds crook go? I don't see it in the pics, should be slap up against the left side of the receiver looking forward and in the groove in the hammer pin, is it angling back towards the middle? |
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To function check the AK.
Make sure it is unloaded. Rack the bolt and put the safety on. Pull the trigger nothing should happen. Put the safety on fire (this is the relevant part) Pull the trigger and keep it trapped to the rear. You should hear a click. While keeping the trigger trapped to the rear rack the bolt. After racking the bolt you release the trigger then you hear a clunk. Pull the the trigger click. Basically you cock the action and check the safety. Then you check your trigger function. The click is the hammer dropping. After which you simulate a round being fired with the trigger trapped to the rear like when the rifle is fired. This should catch the hammer on the disconnector. (If you rack it without having the trigger pulled to the rear it will catch the hammer on the hook or sear portion of the trigger which doesn't simulate firing.) The clunk when you release the trigger is the disconnector releasing the hammer and the hook or sear portion catching the hammer. You then pull the trigger and verify that it resetted correctly on the hook. The trigger basically has two positions. All the way forward or to the rear. The rear position is basically when you pull the trigger. Anytime it isn't being pulled back it should reset itself to the forward position via the hammer legs resetting the trigger. Hammer cocked or forward you release the trigger it resets to the forward position. Next time you are at the range and get that malfunction observe if your trigger makes a clunk sound and if your trigger resets all the way forward by itself. Looking at your pictures i'm a little leery of your hammer spring leg next to the safety. You might want to verify that it isn't possibly snagging the hammer every once in a while with the trigger in the rear position when the hammer gets caught by the disconnector. |
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Quoted:
To function check the AK. Make sure it is unloaded. Rack the bolt and put the safety on. Pull the trigger nothing should happen. Put the safety on fire (this is the relevant part) Pull the trigger and keep it trapped to the rear. You should hear a click. While keeping the trigger trapped to the rear rack the bolt. After racking the bolt you release the trigger then you hear a clunk. Pull the the trigger click. Basically you cock the action and check the safety. Then you check your trigger function. The click is the hammer dropping. After which you simulate a round being fired with the trigger trapped to the rear like when the rifle is fired. This should catch the hammer on the disconnector. (If you rack it without having the trigger pulled to the rear it will catch the hammer on the hook or sear portion of the trigger which doesn't simulate firing.) The clunk when you release the trigger is the disconnector releasing the hammer and the hook or sear portion catching the hammer. You then pull the trigger and verify that it resetted correctly on the hook. The trigger basically has two positions. All the way forward or to the rear. The rear position is basically when you pull the trigger. Anytime it isn't being pulled back it should reset itself to the forward position via the hammer legs resetting the trigger. Hammer cocked or forward you release the trigger it resets to the forward position. Next time you are at the range and get that malfunction observe if your trigger makes a clunk sound and if your trigger resets all the way forward by itself. Looking at your pictures i'm a little leery of your hammer spring leg next to the safety. You might want to verify that it isn't possibly snagging the hammer every once in a while with the trigger in the rear position when the hammer gets caught by the disconnector. It works as expected when function checking. At the range, the trigger would not make the clink sound and would not go forward by itself. |
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If it were me i'd take the top cover off and function check it.
Just pull the trigger, trap it to the rear and cycle the bolt and release the trigger and see how it resets. Do this several times and see if you can replicate the malfunction. I'd keep a good eye on the hammer spring feet as it is likely related to the binding. SInce you have the norinco you can use it for a comparison purposes if something looks hinky. |
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