My Model "A" Firing out of Battery

GuyFawkes

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I bought myself a pre ban Uzi rifle about six months ago, and it doesn't look like it has been shot much if at all. It was the first Uzi I have ever owned. After I got my Tax stamp after a month and half wait, I bought myself a 10.5" barrel from Pike. Yesterday, I took it to the range and it was the first time for me ever firing the gun. I had five different 25rd uzi mags and some cheap steel case rounds. It would not feed out of the any of the five magazines. I dropped a mag out of the gun and managed to get a round in the breech manually and I pulled the bolt back and let it go. Bam the gun fired! I tried that several times and each time, slam fire! I didn't have my finger on the trigger. In fact my finger was not in the trigger well at all.
I though maybe it was a head space problem with the new barrel. So this morning I went to the range again after I installed the original 16" barrel. Also, I tried some brass case rounds and pulled the bolt back let it go and a round feed in and it fired, again? It did that 2 times and then left the range.

As I was overlooking my Uzi, at home, I noticed the bolt is missing the extractor and the clip that holds it in.20241110_151959.jpg20241110_152117.jpg20241109_163542.jpg
 
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nklf

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Hard to tell looking at the photos, but it looks like the firing pin is protruding from the bolt. If the sear is not catching the striker it would cause failures to feed and also result in a slam fire. Is the correct semi-auto sear installed? A FA sear has larger pads that catch the bolt and will not pas through the frame holes on a semi-auto receiver. What part of Texas are you in?
 

Slowmo

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Can you provide some pictures of the bolt and striker assembly removed from the gun?

Also, when you were pulling the bolt back and letting it go, were you being sure to pull it all the way back so the sear can catch the striker? Does your gun have the ~2” rubber block in the back around the recoil spring?
 

RoverDave

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That grip frame doesn't look like an original IMI/Action Arms grip for a semi-auto Carbine. Looks like a semi-auto sear but the parts are not the normal carbine parts. This isn't a factory gun. If the grip frame is a pieced together thing, it might not be catching the sear properly. Could be a mismatch on the size of the mounting hole on the grip frame and on the gun, allowing it to hang down too far. Can you post more photos of the grip frame and the markings on the gun? Higher resolution would help.

As for the feeding problems, I don't know where Pike Arms gets their barrels, but some aftermarket barrels don't have chambers cut properly and cause feeding issues.
 
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As others have stated above, it is hard to tell what may be happening form the current pictures and description. It does sound like a poor match to the sear/grip frame. I have a shop in Bedford and you are welcome to bring it in and I may be able to get you a better diagnoses. I can also replace the missing parts. (I hope this is allowed)
*Edit* After looking closer at the pictures, Check to see if the sear feet are clearing the restrictor ring enough to engage the sear.
 
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GuyFawkes

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:
66ljaf.jpg

20241110_143317.jpg20241110_143412.jpg20241110_143404.jpg20241109_162248.jpg20241110_143348.jpg
 

GuyFawkes

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That grip frame doesn't look like an original IMI/Action Arms grip for a semi-auto Carbine. Looks like a semi-auto sear but the parts are not the normal carbine parts. This isn't a factory gun. If the grip frame is a pieced together thing, it might not be catching the sear properly. Could be a mismatch on the size of the mounting hole on the grip frame and on the gun, allowing it to hang down too far. Can you post more photos of the grip frame and the markings on the gun? Higher resolution would help.

As for the feeding problems, I don't know where Pike Arms gets their barrels, but some aftermarket barrels don't have chambers cut properly and cause feeding issues.
Tomorrow I will post photos of grip frame and marking on gun.
 

GuyFawkes

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Can you provide some pictures of the bolt and striker assembly removed from the gun?

Also, when you were pulling the bolt back and letting it go, were you being sure to pull it all the way back so the sear can catch the striker? Does your gun have the ~2” rubber block in the back around the recoil spring?
yes, rubber block.
 

GuyFawkes

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Is there an extractor in the bolt?
No, I didn't notice that till after tried to shoot Uzi. I can't believe I missed that when I received the Uzi from my FFL agent. I just boughta extractor with the clip on GunBroker.com.

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slimshady

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Just be aware OEM extractors are rare and expensive these days, most for sale are out of spec aftermarket ones.
 

Slowmo

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What is restrictor ring?
It is the ring by the feed ramp that receives the chamber-end of the barrel. Does the sear rub on it or hit it when cycling the trigger? Is there much play between the grip and the receiver?

I’m less familiar with the semi-auto variant. On an SMG, if the top cover is too loose, the sear may not successfully catch the bolt, and the gun can runaway. I’m not sure if a loose top cover can keep the sear from catching the striker or not.
 

124NATO

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I believe the ones from an Uzi Pro will work:
https://iwi.us/product/uzi-pro-spare-parts-kit/

Hey Guyfawkes

FYI all the extractors are for FA bolts you will most likely need to have the bottom corner trimmed off the extractor to allow the right side round to slip under the extractor in a SA bolt. There is a tendency to get failure to feed from the right side of the magazine if it isn't clipped.

I would personally buy a few extra from the IWI store as you know there legit.

Check out the UT link below as there is a good picture of the extractors

 

GuyFawkes

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It is the ring by the feed ramp that receives the chamber-end of the barrel. Does the sear rub on it or hit it when cycling the trigger? Is there much play between the grip and the receiver?

I’m less familiar with the semi-auto variant. On an SMG, if the top cover is too loose, the sear may not successfully catch the bolt, and the gun can runaway. I’m not sure if a loose top cover can keep the sear from catching the striker or not.

No play at all between the grip and the receiver.
 

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