Bolt/Carrier problem? > AK Discussions

Posted: 5/2/2008 10:10:23 PM EDT

New Bulgarian AK47. Approx 200 rds through the weapon. Today at the range I kept getting an recurring problem. The bolt would not slide all the way forward. This happened when a new magazines were loaded as well as when rounds were fired and it tried to cycle.

I broke it down on the range and *THINK* I see the problem.

http://img215.imageshack.us/img215/4928/dsc00860ge3.jpg

This is the picture of the bolt not going all the way forward. It stops about an inch from full closure.

http://img262.imageshack.us/img262/8227/dsc00862xb5.jpg

This spot is newly worn. It locks the bolt where it wont go all the way back during the cycle.

http://img215.imageshack.us/img215/4171/dsc00863kt7.jpg

Another picture of the same wear that seems to stop the bold from cycling.

http://img74.imageshack.us/img74/4502/dsc00864ae2.jpg

Last picture of the bolt/carrier group where it hangs up.

Is this normal? Does it eventually wear itself in? How do I fix it?

Any help would be appreciated.

Posted: 5/2/2008 11:07:32 PM EDT

[#1]

I know this would be normal for a WASR, fixed by a few more hundred rounds. I polished my bolt carrier and bolt in my wasr to quicken the results.

I believe that this usually happens to WASR's and ak's with mix match parts.

Kind of unusual for a Bulgy

Posted: 5/3/2008 1:01:22 AM EDT

[#2]

The other problem I notice:

The complete absence of any grease or lubricant.

Would you drive your car around with no oil?

Posted: 5/3/2008 1:26:27 AM EDT

[#3]

Well...

After I came home from the range it is usually my practice to completely clean the weapon. Especially if I am going to post picture on the internet lest I ridiculed for my lack of maintenence.

Posted: 5/3/2008 2:22:22 AM EDT

[#4]

Post a picture of the bolt lug. Peening or wear at that spot on the carrier is not normal.

Posted: 5/3/2008 3:26:12 AM EDT

[#5]

You could always add a little lapping compound to the area of the carrier that seems to be suspect and hand cycle until it clears up.

Posted: 5/3/2008 3:55:46 AM EDT

[#6]

if its under warranty send it back. if no tthen you have 2 options.

1. get a small file and try to round the edges where its snagging.

2. Use a dremel and round the edges where its snagging.

Posted: 5/3/2008 4:56:19 AM EDT

[#7]

Any way we can get a pic of the cam lug on the bolt?

Posted: 5/3/2008 6:09:17 AM EDT

[#8]

Quoted:
The other problem I notice:

The complete absence of any grease or lubricant.

Would you drive your car around with no oil?

+1

eat a few more of those nutter butters and run your finger over the parts to get a nice greazy finish

(or use oil/bearing grease)

Posted: 5/3/2008 10:31:56 AM EDT

[#9]

height=8

Quoted:
Any way we can get a pic of the cam lug on the bolt?

http://img186.imageshack.us/img186/6688/dsc00865uz0.jpg

http://img186.imageshack.us/img186/2312/dsc00866vi8.jpg

Yes. I know the pictures aren't that great. I tend to spend my money on the wrong things.

Posted: 5/3/2008 12:01:10 PM EDT

[#10]

Your bolt head is damaged in the area circled. Needs to be replaced.
Carrier is damaged too.
Send the rifle back.

Such damage can occur if bullet guide is missing, cam surface (circled red) of the bullet guide is broken, or the timing of the bolt cam is off.

Bolt cam (circled red)

Posted: 5/3/2008 12:12:53 PM EDT

[#11]

The bolt lug looks like it is peened where is contacts the carrier.
Neither the bolt or the carrier should be peened. I've got rifles with thousands of shots through them and the bolt and carrier show nothing more than finish wear in that area.
If I had to guess I'd say both the bolt and carrier are soft.
In any case, send the rifle back for repair.

Posted: 5/3/2008 12:47:31 PM EDT

[#12]

Uh oh...

Bullet guide?

Where is that located??? This may be my problem. I see no part that looks like a bullet guide on my rifle.

Sending it "back" is going to be a problem. I am in the military and between training cycles and the upcoming deployment it would be difficult if not impossible to do this. In addition I am in Alaska which makes shipping things about 10 zillion times more expensive.

I just looked online and saw a bullet guide for like $20. Is that something I can install myself if I bought it and knew where it went?

Posted: 5/3/2008 1:14:16 PM EDT

[#13]

The bullet guide is (or should be) riveted to the trunnion, between the front of the magzine well and the face of the barrel.

Posted: 5/3/2008 6:59:46 PM EDT

[#14]

Primary function of the bullet guide is to initiate rotation of the bolt.

Posted: 5/3/2008 8:13:34 PM EDT

[#15]

Is this by any chance an SLR-107 ?

Posted: 5/3/2008 10:05:59 PM EDT

[#16]

Quoted:
Is this by any chance an SLR-107 ?

He has the picture of the rifle above. It is one of the ISD built rifles that were originally built for Global Trades and Lancaster Arms though I believe TGI is importing them also now. Not an Arsenal rifle.

Posted: 5/4/2008 6:41:30 AM EDT

[#17]

Quoted:

Quoted:
Is this by any chance an SLR-107 ?

He has the picture of the rifle above. It is one of the ISD built rifles that were originally built for Global Trades and Lancaster Arms though I believe TGI is importing them also now. Not an Arsenal rifle.

I looked again at the first picture and it did not look like it had a side folder so it could not be an Arsenal. However the receiver is stamped "made in Bulgaria"

Posted: 5/4/2008 9:12:47 AM EDT

[#18]

Quoted:

Quoted:
Is this by any chance an SLR-107 ?

He has the picture of the rifle above. It is one of the ISD built rifles that were originally built for Global Trades and Lancaster Arms though I believe TGI is importing them also now. Not an Arsenal rifle.

I looked again at the first picture and it did not look like it had a side folder so it could not be an Arsenal. However the receiver is stamped "made in Bulgaria"

ISD is a company in Bulgaria.

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[ARCHIVED THREAD] - Bolt/Carrier problem?

[ARCHIVED THREAD] - Bolt/Carrier problem?