Locked Bolt

Sniffer

Sniffer

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So I took my NEA 15 to the range today and on my 40th shot (I only know cos I filled 6 magazines and it took a dump on the last round on the 4th) it fired the round as normal but I just *knew* something was up

I tried to pull the charging handle back to have a look but no go. I dropped the lower off and had a closer look - the wings on the bolt are rotated behind the tabs on the upper at the end of the barrel (hopefully the picture explains whats going on better than I can) and its stuck good

Is there easy way to separate/fix this or will it be another trip back to NEA in the 3ish months I`ve owned it?

Locked Bolt.JPG
 

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sorry, you lost me with "wings on the bolt" do you mean the lugs? do you mean a part on the bolt carrier group? I can't tell much from the pic, is there a larger version?

I'm assuming the bolt doesn't move, does the BCG?
 
The bolt isn't going to unlock unless the carrier can be moved.
You could try tapping the carrier back with a brass drift and a hammer. The drift is going to have to be shaped to make contact with one of the shoulders on the carrier.
Or you could return the upper to the mfr.

What ammunition were you using?
 
why not just mortar the biatch hard?

had that happen to me with my CA, i mortared the fack out of it hard, bolt unlocked.

put the lower back on, put the collapsable stock back in to its completely collapsed position i.e. unextended, push the bolt latch open and while pulling on the charging handle, mortar it like a mothafacka hard back on its stock

01308153592179c45ea1a76d945e0ccd_zpsc0bglxhu.jpg
 
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mikethebike said:
why not just mortar the biatch hard?

had that happen to me with my CA, i mortared the fack out of it hard, bolt unlocked.

put the lower back on, put the collapsable stock back in to its completely collapsed position i.e. unextended, while pulling on the charging handle, mortar it like a mothafacka hard back on its stock
Click to expand...

What he said. Just wear gloves because if you slip, your knuckles might rake across some sharp steel.
 
mustang979 said:
sorry, you lost me with "wings on the bolt" do you mean the lugs? do you mean a part on the bolt carrier group? I can't tell much from the pic, is there a larger version?

I'm assuming the bolt doesn't move, does the BCG?
Click to expand...

Apologies, I know how it all goes together but I struggle with the correct terminology.

Yeah the lugs on the bolt are still rotated and are stuck meaning the whole bolt carrier group can't move back
 
tiriaq said:
The bolt isn't going to unlock unless the carrier can be moved.
You could try tapping the carrier back with a brass drift and a hammer. The drift is going to have to be shaped to make contact with one of the shoulders on the carrier.
Or you could return the upper to the mfr.

What ammunition were you using?
Click to expand...

So do you mean using the drift to push the bolt forward (i.e. the same direction that the bullets go down the barrel) or the other direction?

I was using 7.62x39 surplus non corrosive
 
Sniffer said:
So do you mean using the drift to push the bolt forward (i.e. the same direction that the bullets go down the barrel) or the other direction?

I was using 7.62x39 surplus non corrosive
Click to expand...

read my above post

mortar the biatch! it will unlock

don't be afraid, it is standard procedure
 
mikethebike said:
why not just mortar the biatch hard?

had that happen to me with my CA, i mortared the fack out of it hard, bolt unlocked.

put the lower back on, put the collapsable stock back in to its completely collapsed position i.e. unextended, push the bolt latch open and while pulling on the charging handle, mortar it like a mothafacka hard back on its stock

01308153592179c45ea1a76d945e0ccd_zpsc0bglxhu.jpg
Click to expand...

I`d like a quick fix like this but is this a once in a blue moon normal anomaly of this type of action or is it indicative of an underlying issue?

If its the latter I`d rather send it back so I can get it sorted.
 
Sniffer said:
I`d like a quick fix like this but is this a once in a blue moon normal anomaly of this type of action or is it indicative of an underlying issue?

If its the latter I`d rather send it back so I can get it sorted.
Click to expand...

if it happens 2 or 3 times in say 4000 rounds I wouldnt worry, if it happens a dozen times in 4000 rounds, I'd worry.

so if it happens again in say your next 500 rounds, time for you to address the issue with the manufacturer

could be many reasons, chamber out of spec, bad lacquer, dirty chamber, dirty bolt, gas rings effed, undergassed, aliens, etc...

only time this was happening to me my upper was compketely effed up and wanstalls reimbursed me the entire rifle, but hey could be something else, dont get alarmed too soon.
 
Sniffer said:
I`d like a quick fix like this but is this a once in a blue moon normal anomaly of this type of action or is it indicative of an underlying issue?

If its the latter I`d rather send it back so I can get it sorted.
Click to expand...

I had the same thing happen with a brand new rifle. I mortared it, got it unstuck then clean it. No problem since.

Get it unfuct then inspect. You can't determine anything with the bolt locked.
 
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Guys - many thanks

I mortared it literally once and the bolt dropped out (I feel kinda foolish as it was so easy but its in the memory bank moving forward)

I then found a casing stuck in the barrel, so the only thing I had that was long enough to go down the barrel to tap the casing out was a specialist drill bit I used to use for work so a couple of whacks and its out now too

Inspected everything and it seemed good so its all back together ready for its next outing at the start of the week!
 
lacquer casing does that to AR. Was shooting Hornady steel match out of my then brand new AR10 and wilson combat AR years ago, both did the same thing cause everything is still tight and when the lacquer casing heats up, it gets super sticky
 
Lacquer 'melting' in the chamber and causing it to stick is a myth.

Try an experiment: take an empty steel/lacquered case and put it to a blow torch. See how hot you actually have to get the case before anything happens to the lacquer.

The reason that steel cases stick is because....they're steel. Steel cases do not expand and contract in the same manner as brass cases.
 
*MALICE* said:
Lacquer 'melting' in the chamber and causing it to stick is a myth.

Try an experiment: take an empty steel/lacquered case and put it to a blow torch. See how hot you actually have to get the case before anything happens to the lacquer.

The reason that steel cases stick is because....they're steel. Steel cases do not expand and contract in the same manner as brass cases.
Click to expand...

Ahh good to know, thanks
 
sky52 said:
lacquer casing does that to AR. Was shooting Hornady steel match out of my then brand new AR10 and wilson combat AR years ago, both did the same thing cause everything is still tight and when the lacquer casing heats up, it gets super sticky
Click to expand...

Thats the weird thing - the cases are brass (or at least they're a brass colour)
 
Just had a look at the casing I took out - its not visible to the naked eye but its bent, I only know because when I set it down on a level surface it rolls back and forwards until it finds its sweet spot (being crooked not uniform)

I guess thats why it jammed - is surplus ammo known for blemishes like this? I found one round that was waaay off

This is the jammed casing:

Casing.jpg

And this is the crooked round:

Crooked Round.jpg
 

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