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Posted: 1/4/2013 7:06:23 AM EDT
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Anybody ever seen this? If you are not careful when charging, the bolt carrier will jump up into this notch and jam. I've only fired the rifle on one occasion, about 20 rounds, with no malfunction. Possible fix, other than replace the receiver? I bought the rifle off a guy locally about 5 years ago, and thought I got a really got deal. Now I'm thinking I may have just bought his problem.  |
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My Russian, Hungarian and Bulgarian rifles have it on the left. I know I have had guns with them on the right. Romanian guns? Is that a Romanian rifle? WASR or SAR?
If it is an issue you can always try a buffer which will prevent the bolt carrier from going that extra bit rearward that allows it to jump out of the rails. |
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If it is jumping the rail, the relationship between the return spring guide, carrier, and rails is wrong. The return spring guide pushes the carrier down.
The work-around is a $10 buffer. Prevents the carrier from coming back far enough to jump. The "fix" is to weld up the return spring guide above the dovetail and reamachine it so it sits lower. Majuor pain in the ass. I believe it is caused by the rake of the receiver relative to the rake of the rails. |
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How would a buffer keep the carrier from jumping out the the notches in the center of the receiver? I can see how it may help with the notches at the rear of the receiver where the carrier is removed.
Quoted:
If it is jumping the rail, the relationship between the return spring guide, carrier, and rails is wrong. The return spring guide pushes the carrier down. The work-around is a $10 buffer. Prevents the carrier from coming back far enough to jump. The "fix" is to weld up the return spring guide above the dovetail and reamachine it so it sits lower. Majuor pain in the ass. I believe it is caused by the rake of the receiver relative to the rake of the rails. |
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Quoted:
How would a buffer keep the carrier from jumping out the the notches in the center of the receiver? I can see how it may help with the notches at the rear of the receiver where the carrier is removed. Quoted:
If it is jumping the rail, the relationship between the return spring guide, carrier, and rails is wrong. The return spring guide pushes the carrier down. The work-around is a $10 buffer. Prevents the carrier from coming back far enough to jump. The "fix" is to weld up the return spring guide above the dovetail and reamachine it so it sits lower. Majuor pain in the ass. I believe it is caused by the rake of the receiver relative to the rake of the rails. I think a buffer (depending on type) would keep the bolt carrier from going as far rearward by just a hair to make it less likely that the carrier would slip out of place. I found one in a box of parts today and could install it in a rifle to see what changes it would make but it is one that you have to take the guide spring apart to install and I nearly put an eye out the one time I installed it. |
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http://www.arizonaresponsesystems.com/notes/notesak/aktroubleshoot/pageaktroubleshoot.shtml
maybe I'm misunderstanding - are you saying the bolt only jumps the rail, not the bolt carrier? |
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Quoted:
http://www.arizonaresponsesystems.com/notes/notesak/aktroubleshoot/pageaktroubleshoot.shtml maybe I'm misunderstanding - are you saying the bolt only jumps the rail, not the bolt carrier? I think he originally thought that was the problem but, it is really the rear cut out that is catching. So you were correct. |
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OP,
The receiver appears to have a slight outward bow in the notched area. Is this correct, or is it an optical illusion? Have you put a straight edge on the side of the receiver outside of the rail? I have seen Romanian pistols and rifles with badly twisted receivers and warped rails. Specifically Dracos and M10s. |
| The OP's bolt clearance notch seems to be a lot deeper than normal, which allows the carrier to jump at that point, which is also the exact point where the carrier is being pushed up by the hammer. Ideally the notch would make it easier to remove the carrier by allowing the bolt locking lug to clear the receiver but not be deep enough to allow the carrier to jump. Maybe the carrier rails are small or worn too, contributing to the problem. He might try a different bolt carrier or consider having the notch welded-up a little and re-shaped. |
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Kind of hard to get the bolt and carrier into the receiver if you don't have that notch there. thats what the far rear one is for Is that so. How do you get your bolt carrier and bolt into the receiver using only the notch farthest to the rear? Do you actually own one of these rifles? If so, go take it out and take the receiver cover off, take the recoil spring out and pull the bolt carrier to the rear. You will plainly see that the bolt comes nowhere close to the most rearward notch in the receiver. The bolt will exit the receiver at the forward notch, the bolt carrier will exit the receiver rails at the rear most notch. Without the forward notch you could never get the bolt and carrier into or out of the receiver, without first managing to remove the bolt somehow from the carrier first. |
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