M305 bolt issue

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Kraft772

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Hi, I just bought a M305 recently, and only about 60 rounds in the bolt has somehow come out of it's notch in the charging handle and is now preventing it from returning all the way forward.
I've removed the bolt and can't seem to find any damage, so I'm a little confused to say the least as to how this could happen. I'm sure I could disassemble and reassemble the rifle correctly and just go back to shooting,
but I'd really like to know what could cause this and how to prevent it in the future if anyone has any insight. I've attached a few pictures to show what I mean.



 
Did that happen after you fired it, or did it happen after you pulled the charging handle back?

Also, the gun doesn't look like it is greased at all. Did you grease it after removing all the packaging oil that it came in?
 
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I let my friend try shooting it, he said it stopped firing and gave it to me like this. As far as I know he didn't attempt to cycle the rifle after the malfunction.
I oiled the rifle quite liberally after it's initial cleaning, but no grease. This picture is taken after I took the bolt out and cleaned everything and wiped dry inspecting for damage. I've just placed it back how it was for the picture.
 
This is sad to see. Nobody read a manual anymore.

That rifle likely failed because the bolt roller and corresponding cutout in the op rod is not greased.

Also, check that the tip of the op rod (under the stock) is centered on the gas piston. Your charger guide may be out of alignment or too loose, allowing the op rod to over-rotate.
 
Kraft772 said:
I let my friend try shooting it, he said it stopped firing and gave it to me like this. As far as I know he didn't attempt to cycle the rifle after the malfunction.
I oiled the rifle quite liberally after it's initial cleaning, but no grease. This picture is taken after I took the bolt out and cleaned everything and wiped dry inspecting for damage. I've just placed it back how it was for the picture.
Click to expand...

There are specific points on the rifle which require grease. There's a good Youtube video by TonyBen that shows you where.

To get the bolt back where it belongs, you need to almost remove the charging handle and replace it while the bolt is in the correct place so that the bolt roller is properly engaged with the charging handle.

It's possible that your friend pulled the charging handle upwards and away from the receiver while pulling back on it causing it to come out of its track and disengage from the bolt roller before handing it back to you (it's a common enough mistake).

As Claven said, it's also possible that the oprod guide may be slightly out of alignment too
 
visit tonyben, do your homework, mobile 1 red is fine. that is one bone dry roller. hopefully the inside of the oprod isn't chewed up. see as many tonyben vids that apply before taking the rifle to the range.
 
How could using oil instead of grease cause the roller to disengage?

Could the oprod tab be too small?

Could the oprod tab groove be too wide?

Could the noch to remove the oprod tab from its groove be too wide?
 
No to the above imagined op rod issues.

Either the rod is misaligned, causing it to want to jump the track (an op rod guide issue) or it's being run dry as a bone, causing the roller to hammer the came in the op rod hump.

Quite likely it's both.

The bolt roller doesn't roll without grease, it just slams the op rod. Not good.
 
Interesting, the manual only said a very light coating of oil, no mention of grease what so ever. As I mentioned in the previous reply it did have oil, I wiped it completely dry after the malfunction just to check for damage.
Thank you all for the very quick replies, I will watch TonyBen and reassemble with grease and hopefully all is well!
 
The Norinco manual is next to useless. I'd much rather listen the the sage advice of the many hard core M14 enthusiasts here. The stickies and TonyBen's vids are a wealth of info
 
Kraft; this has been mentioned already but you have to be careful while using the charging handle. Straight back only, no outwards pull or the charging handle will come free of the track and the bolt is not held in position, exactly as you have.

Grease it, reassemble it, and shoot it. Wait for this to happen again without any human assistance; you may not really have a problem.
 
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