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  1. #11
    1) Remove upper from lower. Does the BCG easily slide in and out by hand or is it getting hung up on something?
    2) Swap components of the BCG. You've already swapped BCG's and confirmed the BCG is malfunctioning. Do big components first. Is it the bolt or the carrier?
    3) This is why you don't skimp on the BCG. BCM, DD, Noveske, Sionics, Colt, LWRC, Sharps, Youngs, etc... It's the heart of your AR, and it's only $20-40 extra to get a true known quality mil-spec BCG. Eat ramen if you have to.
    Quote Originally Posted by KG1 View Post
    You are the expert in all things read about on the internet.

  2. #12
    Masticator Trigger Time's Avatar
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    I've also seen this happen because of a out of speq charging handle.
    change that and see if you have the same binding

  3. #13
    My nephew had some failure to extract issues this weekend.
    His Anderson AR was sheering off just enough of the case rim off to leave the case in the chamber.
    This in turn, caused the next round to get jammed into the receiver when it was still being held in place by the magazine feed lips.

    He was understandably upset.
    This was basically a new AR. I'm sure it had less than 500 rounds down the pipe, and it is a factory build he purchased at Rural King.

    This was during our annual family Fathers day shootout, held at his fathers house.
    I got the first stuck case out of the chamber with a cleaning rod.
    When the next case did the same thing I told him to let me see it.
    Took the upper off, removed the bolt and charging handle.
    Inspection of the bolt showed brass shavings.
    I looked into the bore and saw it was dry as a bone.

    I asked my nephew if he forgot to lube this thing after he cleaned it last.
    He said, "No, I'm sure I lubed it."
    I asked him if he oiled the bore and chamber. He said he ran an oiled patch down the barrel.
    I used the cleaning rod and a patch to swab a bit of Hopp's gun oil in the bore and what do you know.
    It started running like it was supposed to!

    I think he learned a valuable lesson, and at a good time.
    NRA Instructor/Dormant U.S.Marine/ NRA Benefactor-Life

  4. #14
    Grandmaster halfmileharry's Avatar
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    ARs like to be wet. I usually get a good oil cloud the first couple of shots after I clean and LUBE.
    The more you sweat in training the less you bleed in battle.

  5. #15
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    lovemywoods's Avatar
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    The BCG appeared to be well-oiled so I don't think that was the issue this time.

    I looked at the BCG. It was well staked. The bolt would move into the carrier with some resistance. It would pass the "stand it on end and the bolt shouldn't move into the carrier". However we didn't take the bolt apart and inspect the rings. Interesting idea.

    I'm looking forward to seeing what the INGO brain-trust and Tactically Fat come up with.

  6. #16
    Grandmaster halfmileharry's Avatar
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    I'll go back to "WET" again. I've seen some new weapons needing more than normal lube until they get a few rounds through them to be dependable. I don't like it but it's even happened to me on a couple of high dollar weapons.
    The more you sweat in training the less you bleed in battle.

  7. #17
    Masticator Trigger Time's Avatar
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    TF have you tried a different charging handle?

  8. #18
    Master Alpo's Avatar
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    If you haven't already, run a pipe cleaner throught the gas key to check for obstructions. Check bolt lugs for proper profiles.
    I all too often ran out of talent well before the exit of the turn. (© Señor Mouse)

  9. #19
    Masticator Trigger Time's Avatar
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    Also I'm wondering if the cam pin could be out of speq

  10. #20
    I agree with Trigger Time...
    Swap in a different charging handle and see if that makes a difference.
    When you remove the bolt and charging handle, check the inside of the upper along the top where the charging handle rides and see if there's any damage, scrapes, or gouges - abnormal wear.

    Is the bolt/carrier group nickel-boron coated?

    might just have to scrap that carrier and get another.
    odds are, the bolt is probably fine, but the carrier could be out of spec, but probably best to scrap the whole thing if it keeps failing in different rifles.

    I've built and used lots of Anderson parts and they have all been fine.

    Lurker wanna be

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