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Bolt does not close all the way yugo m70 milled

1118 Views 33 Replies 9 Participants Last post by  Osasamir66
4
Is anybody still interested to tell me why my bolt dosent close all the way . I have to tap it to close and some time it close normal i am at the last steps finishing my build
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is that with a round in the chamber? If it is or if it has the headpace gauge in there it is normal and will likely loosen up after you pin it and shoot it a few times. if you have nothing in the chamber it may be that you will need to push the barrle back tiny ammount.
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is that with a round in the chamber? If it is or if it has the headpace gauge in there it is normal and will likely loosen up after you pin it and shoot it a few times. if you have nothing in the chamber it may be that you will need to push the barrle back tiny ammount.
No sir there is nothing on the chamber at all . and I was wounder if I can push the barrel back after I already drilled the barrel pin hole ? I sisnt use gauges it was just a life round . do it need a new barrel now or what ?
Can you post a pic of the entire front end? Looks like your rear sight block is too far forward. Live rounds don't tell you much about headspace... New barrel depends on how far off you are. From your pics it looks like you'll need a new one...
Can you post a pic of the entire front end? Looks like your rear sight block is too far forward. Live rounds don't tell you much about headspace... New barrel depends on how far off you are. From your pics it looks like you'll need a new one...
So you think I will need one anyway and a gauges ?
I can't tell you if you'll have to get a new barrel. That depends on how far off you are. From how far off the rear sight block looks in the pic, my bet would be yes. An oversized pin won't be enough.

When building an AK, headspace gauges are a must have. A live round may or may not close if it's too tight. Doesn't look like you're too tight based on where the rear sight block is. Live round can close however if you are too loose...
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I never had that much issues with ak build . bit the milled karma is guess
If your top cover sits in the slot int he back no problem then you don't need to worry about the front sight block. If the headspace is tight... eg your barrel needs to move out then you will have no problem pushing the barrel out a little and then "reaming" I would not use a drill as it will be very little to remove. The reason it is not an issue is because the barrel pushes forward and there is always a little gap Infront of the barrel pin because when you fire the first few times it pushes the barrel forward against the pin. If your barrel is too loose you will need to replace the barrel but only if it can not be fixed with an oversized pin not usually the case if it is too tight. still you need headspace gauges and the correct reamer. I think it is 7mm if it is stock sized pin.
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If your top cover sits in the slot int he back no problem then you don't need to worry about the front sight block. If the headspace is tight... eg your barrel needs to move out then you will have no problem pushing the barrel out a little and then "reaming" I would not use a drill as it will be very little to remove. The reason it is not an issue is because the barrel pushes forward and there is always a little gap Infront of the barrel pin because when you fire the first few times it pushes the barrel forward against the pin. If your barrel is too loose you will need to replace the barrel but only if it can not be fixed with an oversized pin not usually the case if it is too tight. still you need headspace gauges and the correct reamer. I think it is 7mm if it is stock sized pin.
I already have an over sized pin there and its was done by the 7mm reamer
That is possible... I don't remember off the top of my head. Ak-builder.com sells all you need.
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Stop and figure out what is going on before acting. If you headspaced it with a live round and a few layers of tape or a feeler gauge and the bolt would close on the live round right? What has changed since then that would cause the bolt to not close? Do you have the gas block and tube on? Hopefully you haven't pinned the RSB or gas block or drilled the gas port hole yet. If you're just mocking up the build is there something binding? If your RSB is not aligned that is one thing that can cause binding as can the gasblock being off ect. It doesn't look like you have good contact of the top cover and RSB as mentioned. Do you have the bullet guide put in?
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That is possible... I don't remember off the top of my head. Ak-builder.com sells all you need.
I had to order a custom made pin after o reamed the hole with the 7mm . I hope I dont have to buy another barrel
If it is tight then I doubt that you will need to. If its hanging up for some other reason than the barrel location, It might be required but you still have room to step up on the barrel pin I think depending on the issue. We are guessing because we can't really see what the issue is.
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I would put the barrel pin in, the try pressing the barrel out. Sometimes it will move ever so slightly. Tight is better than loose, don't stress. Worst case adjust the barrel where need and order an oversized barrel pin and re drill.
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Posts like this is like trying to find a flashlight in the pitch black of someone else’s back yard. I would replace the return spring. If your hanging up say on the top of the hammers slope or it will go into battery with a little help and your headspace is ok then your resistance to have the carrier and bolt close is often a worn out return spring. Most of these rifles have springs that are actually out of torsion spec due to age and abundant use. Try that, then if you’re in the zone drive rounds down range to get it running.
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Posts like this is like trying to find a flashlight in the pitch black of someone else’s back yard. I would replace the return spring. If your hanging up day on the top of the hammers slope or it will go into battery with a little help and you headspace is ok then your resistance to have the carrier and bolt close is often a worn out return spring. Most of these rifles have springs that are actually out of torsion spec due to age and abundant use. Try that if you’re in the zone drive rounds down range to get it running.
Well thats a good idea too but if you dont have the flash light you wont see anywhere. At least when you look for the light you might find it . better than losing hope . correct?
Posts like this is like trying to find a flashlight in the pitch black of someone else’s back yard.
Yes! It's like the parable of the 3 blind men describing an elephant. The one grabbing the elephants leg says an elephant is like a pillar. The one grabbing the tail says an elephant is like a snake and the one grabbing the trunk says the elephant is like a tree branch. We're getting just enough information in multiple single issue threads that it's hard to see the overall problem or any progress. Instead we have guys saying: check headspace; push the barrel out; replace the barrel; oversize barrel pin; hammer hang-up; weak spring; binding; misaligned; just tight-shoot it a few times ect. All of those suggestions could possibly be what's wrong and the correct course of action. Would it change anyones first suggestion to know that the bullet guide isn't installed?

Osasamir66, please start a single build thread. Guys want to help you, but jumping around and making multiple threads just makes it difficult for people to give you accurate advice.
Bullet guide improperly installed or not enough room for the bolt to close, improperly headspaced. 100% on the latter minus a few thousands of a percent.
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Yes! It's like the parable of the 3 blind men describing an elephant. The one grabbing the elephants leg says an elephant is like a pillar. The one grabbing the tail says an elephant is like a snake and the one grabbing the trunk says the elephant is like a tree branch. We're getting just enough information in multiple single issue threads that it's hard to see the overall problem or any progress. Instead we have guys saying: check headspace; push the barrel out; replace the barrel; oversize barrel pin; hammer hang-up; weak spring; binding; misaligned; just tight-shoot it a few times ect. All of those suggestions could possibly be what's wrong and the correct course of action. Would it change anyones first suggestion to know that the bullet guide isn't installed?

Osasamir66, please start a single build thread. Guys want to help you, but jumping around and making multiple threads just makes it difficult for people to give you accurate advice.
I dont know what is your problem with me . i tried to be respectful in your first comment but I guess it didn't matter . so
1- you corrected my language but my question here was not about how good i speak or read or write english . all I know is i know what it know by self learning .
2- you play that funny guy with elephant example and all kind of funny s . Wich is i Dont see anybody laugh .
3- if you are not here to help people find answer with respect I dont think people will care much about what you saying
4- I am sure you are one of those people when they do some simple job they talk like a professor about everything
5- please Don't take things personal and remember we here in s forum for a Soviet gun
Thank you sir
I dont know what is your problem with me . i tried to be respectful in your first comment but I guess it didn't matter . so
1- you corrected my language but my question here was not about how good i speak or read or write english . all I know is i know what it know by self learning .
2- you play that funny guy with elephant example and all kind of funny s . Wich is i Dont see anybody laugh .
3- if you are not here to help people find answer with respect I dont think people will care much about what you saying
4- I am sure you are one of those people when they do some simple job they talk like a professor about everything
5- please Don't take things personal and remember we here in s forum for a Soviet gun
Thank you sir

If I had a problem with you I wouldn't of tried to help you.
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