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Thread: BCM Fail to Extract Questions

  1. #11
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    Quote Originally Posted by bjxds View Post
    I have a new Mid 16. Let me say so far BCM is working with me on this issue. I think they make a Quality product and service so far has been good. I just would like experiences and opinions with more AR time than me, so that I have a full understanding as what is happening.

    When I first shot it ran about 5 rounds with no issues. Then I had some failure to extracts. I tried 3 different mags with the same results. The fired case was still in the chamber as the next round from the mag was trying to feed.

    I contacted BCM, and after some trouble shooting they wanted me to send the BCG for them to test. Testing resulted in no failures, and they seem very confident it was the ammo, and requested I try something else. They claim a lot of ammo is sub standard, ie not NAT0 spec 556, may be under powered or standard case sizeing and may not work properly in the weapon. Others have mentioned a lot of ammo now marked as 556 is really 223.

    When I received the BCG, I tried several different loads, Independence, Winchester white box, Lake City, and Federal XM193 all 55 grain.

    The only ammo that worked with out any problems was the Federal XM193. I had the same failure to extract with all the others. The Independence is supposed to be NATO 556. So Maybe they are on to something.

    The other ammo is underpowered compared to the Federal, almost like the difference between a standard vs manum load but I would think if it was an underpower ammo issue I would get a short stroke and/or failure to eject not extract. It seem to me a failure to extract would be related to the extractor. Also if I put one round in the mag and shoot it it will fire, the bolt will lock open on the empty mag and the case is in the chamber, if I hit the bolt release and pull the charging handle back the round will eject.

    I know a lot of people that are able to shoot almost anything without any problems in their AR's, 223 or 556 NATO. I have never had another weapon that would not shoot so many different types of ammo So why is this so picky?

    Also if the Independance ammo is supposed to be M193, but it does not work, how can I verify that any other ammo that claims to be m193 or any other Mil Spec/NATO stand will work, especially now that ammo is so hard to get. If I had problems with cheap ammo 1 out of 20 I could live with it for plinking as long as I could find something that would work 100% of the time for other purposes, after all thats way I bought the BCM, for all the great reviews. RELIABILITY is Everthing for me.


    Any and all experiences comments are greatly appreciated.

    Ok, just so we are clear, you have a factory built BCM rifle (MID-16)? Nothing you put together correct??

    Assuming this is a factory built gun, it is important to know that BCM shoots a FULL MAG through each gun to ensure reliability. This is more than most any other manufacturer BTW. So if the gun ran at the factory, but not with you, then we have to start looking at ammo as the problem. BCM uses correct 5.56 to test fire their rifles (not reloaded crap like Independence). So ditch this ammo.

    Your gun SHOULD run with Winchester .223 (or most other quality .223 manufacturers).

    You mention that the round is stuck in the chamber and is not coming out. This usually points to the following:

    1. Build up of carbon/powder in the chamber, thusly holding onto the expanded case. So thoroughly clean your chamber.

    2. Chamber is out of spec and needs reamed. This would normally be my answer if this was a BM, but since they (BCM) and YOU have shot 5.56 through the gun without issue, then you can throw this idea out.

    3. Have the O-ring installed on the extractor insert. This adds tremendous tension and quite honestly should never be used with a middy. So if you have this on the gun, remove it.

    4. Extractor claw is full of material. Check it to ensure that it is clean and sharp on the edges.


    Last, but not least, check the pressure of the gun. Load ONE ROUND into a mag. Chamber said round and fire it. Did the bolt lock back to the rear? If yes, then your pressure is fine so DON'T mess with the spring or buffer.



    C4

  2. #12
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    I'm curious as to why so many fellas here think his extraction issue has anything to do with the buffer/spring??? I don't see how his buffer/spring combo would cause a failure to extract.
    America is not at war... The U.S. Military is at war... America is at the mall.
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  3. #13
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    Put 3 rounds in the chamber and try manually racking the bolt and see if it is extracting. BTW, check the way make sure the mag catch isn't too loose or tight.

  4. #14
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    This is a factory build, purchased from G&R Tactical as a matter of fact, about a month ago. Grant, thanks for the feedback.

    NO O ring, BCM tested BCG and found no problems with it.

    I have cleaned the rifle several times so I cant imagine it is a dirty chamber. Even if it was I would think it would cause problems with all ammo.

    If I fire 1 round the bolt locks back on an empty mag.

    There is NO failure to extract when I load 5 rounds and manually rack the charging handle with any of the ammo, SO WHY ONLY WHEN IT'S FIRED?

    I gotta admit I can almost believe it is an ammo issue, but why does the Independace and Winchester not work in mine when so many others can use it? The Winchester IS Factory 223. Like I said the Federal seems like a magnum load compared to the Independance and Winchester.

  5. #15
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    Are there any marks on the cases that would indicate a burr or obstruction in the chamber? Any spare BCGs you could try?

  6. #16
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    Quote Originally Posted by bjxds View Post
    This is a factory build, purchased from G&R Tactical as a matter of fact, about a month ago. Grant, thanks for the feedback.

    NO O ring, BCM tested BCG and found no problems with it.

    I have cleaned the rifle several times so I cant imagine it is a dirty chamber. Even if it was I would think it would cause problems with all ammo.

    If I fire 1 round the bolt locks back on an empty mag.

    There is NO failure to extract when I load 5 rounds and manually rack the charging handle with any of the ammo, SO WHY ONLY WHEN IT'S FIRED?

    I gotta admit I can almost believe it is an ammo issue, but why does the Independace and Winchester not work in mine when so many others can use it? The Winchester IS Factory 223. Like I said the Federal seems like a magnum load compared to the Independance and Winchester.
    Again, can you post pictures of the spent brass that failed to extract?

  7. #17
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    I believe this is a buffer/buffer spring issue. Depending on where you get your rifle, parts like buffers could have been swapped prior to purchase.

    Go buy a carbine buffer and standard spring. This is the next trouble shooting step you should take. If everything works out, then just get most of your money back by selling your heavy buffer.

    Sent from my SGH-T999 using Tapatalk 4 Beta

  8. #18
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    Quote Originally Posted by Obscenejesster View Post
    I believe this is a buffer/buffer spring issue. Depending on where you get your rifle, parts like buffers could have been swapped prior to purchase.

    Go buy a carbine buffer and standard spring. This is the next trouble shooting step you should take. If everything works out, then just get most of your money back by selling your heavy buffer.

    Sent from my SGH-T999 using Tapatalk 4 Beta
    The dude already said he bought it from GR Tactical so obviously it was in factory condition when he bought it.

    I have a hard time believing ammo is the problem. My two built BCMs eat all sorts of ammo and in over 10k rounds, one rifle choked on Tula and didnt extract twice. Probably because I don't usually clean it so I blamed that on the Tula. Every other ammo I shoot runs fine.

    That's just my experience with BCM rifles. Which I guess you asked for OP.

    Next thought...if BCM fires a full mag of good 5.56, the OP said the 5.56 he had worked. So maybe that's why it left the factory with a pass but something is wrong and this won't fire all ammo.

    I know I wouldn't want a rifle that could only dire a certain type of ammo. I could deal with a rifle not liking a couple brands but not the other way around.

  9. #19
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    Quote Originally Posted by bjxds View Post
    This is a factory build, purchased from G&R Tactical as a matter of fact, about a month ago. Grant, thanks for the feedback.

    NO O ring, BCM tested BCG and found no problems with it.

    I have cleaned the rifle several times so I cant imagine it is a dirty chamber. Even if it was I would think it would cause problems with all ammo.

    If I fire 1 round the bolt locks back on an empty mag.

    There is NO failure to extract when I load 5 rounds and manually rack the charging handle with any of the ammo, SO WHY ONLY WHEN IT'S FIRED?

    I gotta admit I can almost believe it is an ammo issue, but why does the Independace and Winchester not work in mine when so many others can use it? The Winchester IS Factory 223. Like I said the Federal seems like a magnum load compared to the Independance and Winchester.
    Indy ammo is all over the place. You might have a bad batch. No matter what, this is crap ammo and isn't to be trusted.

    Without seeing the gun and shooting it, I am hard pressed to troubleshoot it further.

    Stick with the ammo that works and let the gun break in and then go back and try some different ammo.


    C4

  10. #20
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    Quote Originally Posted by Obscenejesster View Post
    I believe this is a buffer/buffer spring issue. Depending on where you get your rifle, parts like buffers could have been swapped prior to purchase.

    Go buy a carbine buffer and standard spring. This is the next trouble shooting step you should take. If everything works out, then just get most of your money back by selling your heavy buffer.

    Sent from my SGH-T999 using Tapatalk 4 Beta
    This is a none issue if the bolt locks back on an empty mag (FYI).

    Rifle was purchased from me, so NO parts were swapped. Everything is factory BCM.



    C4

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