Norinco carbine trigger reset issues

[timo]

I don't know- all I can say is make a video of what its doing and all the internals of lower. I am not sure where the play is in trigger. It still sounds to me like you have some old and new style parts mixed in lower or some crazy thing like that. These guns are so easy generally.

 

[BigMT]

I may end up having to take a video of the weird behavior of this thing. I've never even heard of issues like this when all the parts have been checked and rechecked. I'm getting ready to tear my hair out over this.

My last thought is the disconnector stop that goes on the same pin as the sear. Does anyone have dimensions of those? This is still the original Chinese one.

 

[timo]

That's what I m saying you have some Chinese some German parts. Make a video so I can see what its doing. I have never had a norinco apart- I am assuming they are the same as a "real UZi" LOL.

 

[BigMT]

The only Chinese parts remaining are the receiver, the bolt, the striker, and the disconnector stop. Everything else is either IMI or US.

Norinco Uzis are normally quite good which is why I figured this would be an easy fix. I'll have to wait a while until I can borrow a camcorder to take a video of what's going on. I don't have a camcorder myself. Any chance you'd be willing to take a few measurements of the disconnector stop along with the striker bar at some point?

 

[timo]

Yup tomorrow I will go to my shop and get my calipers.

 

[BigMT]

Thanks a million. This whole thing is quite a head scratcher. I haven't been beat by a gun problem in years.

 

[Ulwembu]

If you use the SMG parts that came in the SMG lower, you do not have to use the stop dog. This is the little part that sits on the same pin as the sear. I think this is what you call the disconnector stop? I use an SMG lower with parts on my Norinco and don't have any semi parts in there except for the sear. The rest is original SMG.

 

[BigMT]

If you use the SMG parts that came in the SMG lower, you do not have to use the stop dog. This is the little part that sits on the same pin as the sear. I think this is what you call the disconnector stop? I use an SMG lower with parts on my Norinco and don't have any semi parts in there except for the sear. The rest is original SMG.

Okay. I can tell you I didn't know that as I've only ever handled Uzis with purpose built semi parts.

Other than the clearance grind on the back and the smaller sear pads, is there enough of a difference between the modified full sear and the semi sear to be causing the trouble I'm having?

Or is it your bet that the striker bar is the likely culprit? I have half a mind to mill a new one just to see if that's what the trouble is.

 

[timo]

Yes- In the past I had to file the side of the pads a tad, They hit the side of rec

 

[BWE Firearms]

Get your striker fixed first, you know it is bad. Then move on to the next problem.

 

[BigMT]

Will do. Waiting on some measurements so I can either add material to this one or mill a new one.

 

[timo]

Thanks for all your help. Hopefully this is the issue because if it isn't I'm not sure what else to look at. Here are the photos.

The measurements are primarily about the long bar on the striker.

0.464
0.194
4.691 long from tip to back at longer point
4.622 long from tip to back at shorter point--- not sure where you mea

It seems like the striker is badly dimensioned on the front where it would contact the sear and that's allowing it to slip off before the disconnector resets. Would you be able to take a photo of the front of the bar and take some quick measurements so I can make sure? Worst case scenario I'll build up some steel on there, bring it to the right dimensions, and case harden it.

EDIT After looking at this some more I've found that there's a sweet spot on the trigger where I can pull just enough to have the sear clear the receiver and let the striker go forward but it won't reset. What the heck could be causing that? Whatever it is it's happening with the new semi auto trigger group and the Norinco and the IMI I had in there before making this semi auto group.

tall--0.338
thick 0.119
long you have 4.691 that measurement I get 4.887 not sure where your last measurement is

it might be easier to pick up a new striker. I think you can find one

DONT GO BY THESE NUMBERS BATTERYS ARE DEAD AND JUMPING ALL OVER I WILL GET BATTERYS IN AM

 

[timo]

Here ya go not batteries just broke this is with a dial

0.375 tall
0.191 thick
4.879 where you have 4.691- I don't know where your last measurement is being taken from.

 

[Gun God]

What part in your lower was causing the "sweet" spot? Which would cause your sear to stay down, stopping the sear from resetting?