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sapper1
06-02-13, 20:08
I just finished my AR build and went out to test fire it today. It will feed the first round but it will not extract a spent cartridge. To remove the spent cartridge I had to run a cleaning rod down the barrel and push it out which it did rather easily. My first thought was that the extractor was not fully engaging the round. But after looking at the spent cartridge further you can see where the extractor has basically ripped off part of the lip it grabs to extract the shell. Any ideas?
EzGoingKev
06-02-13, 20:28
Need more info like what ammo are you shooting and who's barrel/upper is it?
sapper1
06-02-13, 20:34
Ammo: Federal 5.56 M193 Ball, 55 grain Metal Case Boat-Tail

Upper: DPMS receiver with Les Baer Custom BCG, YHM free float tube, AR Stoner 5.56 16" barrel.
Clint
06-02-13, 20:54
Is the bolt and extractor brand new or is it known-good?

Pull it out and check to see how well the extractor grabs and releases a spent case.

Hook an empty case on the extractor, pull on the mouth sideways to compress the ejector and then do a flick test to verify it flies at least 3 feet.

This should give you an idea if the extractor is working well or not.

If you have another BCG to swap with next time out, try that.


I suspect the barrel is overgassed.

Is it a 16" CAR or midlength gas? Do you know the gas port size?
juliomorris
06-02-13, 21:14
What's the make of the barrel? Oops missed it. I would have the chamber checked as I haven't been impressed with anything AR stoner so far. It might be a tight or rough chamber.
STONE-YARDER
06-02-13, 22:00
Deleted...
Heavy Metal
06-02-13, 22:31
Hot 5.56 ammo in a .223 chamber.
Iraqgunz
06-03-13, 01:40
I'm willing to bet nothing about that barrel is in spec. I may be wrong....
polymorpheous
06-03-13, 03:13
Low quality parts will give you low quality performance.
sapper1
06-03-13, 06:15
I'm willing to bet nothing about that barrel is in spec. I may be wrong....

That is exactly what I am afraid of.
polymorpheous
06-03-13, 07:53
Stop shooting 5.56 pressure ammo until you can verify the chamber dimension.
If it is not 5.56, you can have it reamed. Or just shoot commercial spec ammo.
sapper1
06-03-13, 09:37
Stop shooting 5.56 pressure ammo until you can verify the chamber dimension.
If it is not 5.56, you can have it reamed. Or just shoot commercial spec ammo.

I have stopped shooting it completely until I get everything about the barrel verified.
sapper1
06-03-13, 11:26
This is the barrel I have.

http://www.midwayusa.com/product/834998/ar-stoner-barrel-ar-15-556x45mm-nato-m4-contour-1-in-9-twist-16-chrome-moly-phosphate
mtdawg169
06-03-13, 11:42
This is the barrel I have.

http://www.midwayusa.com/product/834998/ar-stoner-barrel-ar-15-556x45mm-nato-m4-contour-1-in-9-twist-16-chrome-moly-phosphate

It's defective. Pull it off, send it back to Midway for a refund and replace it with a quality barrel.
sapper1
06-03-13, 11:45
It's defective. Pull it off, send it back to Midway for a refund and replace it with a quality barrel.

I just finished speaking with their customer service and I will be sending it back ASAP. Unfortunately it is beyond the 60 day time limit so they will only give me store credit for the full purchase price. What barrels would you all recommend I look at?
kwelz
06-03-13, 12:11
I just finished speaking with their customer service and I will be sending it back ASAP. Unfortunately it is beyond the 60 day time limit so they will only give me store credit for the full purchase price. What barrels would you all recommend I look at?

http://www.midwayusa.com/product/162377/daniel-defense-barrel-ar-15-556x45mm-nato-m4-contour-carbine-gas-port-1-in-7-twist-16-hammer-forged-chrome-lined-chrome-moly-matte-pre-ban
sapper1
06-03-13, 12:12
http://www.midwayusa.com/product/162377/daniel-defense-barrel-ar-15-556x45mm-nato-m4-contour-carbine-gas-port-1-in-7-twist-16-hammer-forged-chrome-lined-chrome-moly-matte-pre-ban

I was just looking at that exact barrel.
kwelz
06-03-13, 12:22
I was just looking at that exact barrel.

Every barrel I have is either Noveske or DD. You can't go wrong.
sapper1
06-16-13, 20:52
Every barrel I have is either Noveske or DD. You can't go wrong.

I just ordered it. Hopefully it will be here in a few days and I can test it.
RMiller
06-16-13, 20:59
Hard to go wrong with a DD barrel.
sapper1
06-19-13, 12:25
The new barrel arrived yesterday and I installed it last night. I took it out over my lunch break today and everything worked great.

I have been waiting to put my muzzle device on until I had the extraction issue figured out so after the successful test I decided to put on the YHM compensator that I had got to try. While it did seem to lessen the recoil some the concussion was to much for me, my ears are still ringing. I will use my standard FH instead.

Thanks for all of the advice.