Page 6 of 6 FirstFirst ... 456
Results 51 to 56 of 56

Thread: Loose gas key

  1. #51
    Join Date
    Apr 2014
    Location
    Republic of Texas
    Posts
    619
    Feedback Score
    17 (100%)
    This would seem to be the case. My BCG is on the way back from BCM with a new gas key as it appears there was an issue with how it was staked and how the bolts were put in. BCM says they replaced the key, properly torqued the bolts and staked the key. Thanks to all and special thanks ro 26inf who offered to restake a new gas key.

    NC

    Quote Originally Posted by The FNG View Post
    Just so everyone is aware, they will!!! This is why BCM is as awesome as they are.

    Me:

    Hi,

    I recently purchased a used BCM bolt carrier group from a friend. It has around 2000 rounds on it (so I am told). I am curious if I could send it back to you guys to have it inspected before I fire it. How would I do this and how much would it cost?

    Thanks,
    Nick

    BCM:

    Hi Nick,

    2,000 rounds is really not a lot for a milspec bolt. So long as it has been properly maintained, your bolt will provide many years of service. BCM bolt carrier groups also carry a lifetime workmanship warranty. Should you ever have an issue, please contact us so we can rectify it.

    Thanks,

    Bravo Company USA, Inc


    Sent from my iPhone using Tapatalk

  2. #52
    Join Date
    Apr 2014
    Location
    Republic of Texas
    Posts
    619
    Feedback Score
    17 (100%)

    Loose Gas Key - Unintended consequences

    So I got my BCG back from Bravo Co. A note about their customer service: they replaced the key and re-staked it. They also replaced the cam pin that was quite worn, but still looked like it had some life in it, and appear to have test fired it to ensure it was operating properly. Can't say enough about their CS!

    So here's a new wrinkle...I took my 11.5" rifle out to test out the BCG and it runs ok, but I noticed that the rifle is now ejecting the cases rather aggressively forward...like 1 o'clockish. No cycling issues, but I am little concerned now, not to mention that at the indoor range 90% of my brass was lost to the brass god ahead of the firing line. Before the gas key had come loose, it was ejecting over my shoulder, about 4 o'clock. I have been running an H buffer, and the rifle had seen well over 2500 rds fired without an issue.

    I've already ordered an H3 buffer and I currently have an H2 I can use to slow down the cycle rate. Question is...does it matter where it is ejecting (other than the annoying loss of brass) as long as it cycles ok? Of pure curiosity, is it possible there was a bit of a gas leak in the key for quite a while and that allowed it to cycle slower using an H buffer? I went to a class in early Sep and ran 1000ish rds thru it, which may have accelerated the gas key issue that appeared shortly afterward.

    NC

    Quote Originally Posted by nightchief View Post
    This would seem to be the case. My BCG is on the way back from BCM with a new gas key as it appears there was an issue with how it was staked and how the bolts were put in. BCM says they replaced the key, properly torqued the bolts and staked the key. Thanks to all and special thanks ro 26inf who offered to restake a new gas key.

    NC

  3. #53
    Join Date
    Jan 2008
    Location
    AZ-Waging jihad against crappy AR's.
    Posts
    24,902
    Feedback Score
    104 (100%)
    It was probably ejecting at 4 o'clock due to the gas leak. People really need to forget about that stupid pie chart. If it's working be happy. I would be using an H3 buffer if I wasn't going to run the A5.

    Quote Originally Posted by nightchief View Post
    So I got my BCG back from Bravo Co. A note about their customer service: they replaced the key and re-staked it. They also replaced the cam pin that was quite worn, but still looked like it had some life in it, and appear to have test fired it to ensure it was operating properly. Can't say enough about their CS!

    So here's a new wrinkle...I took my 11.5" rifle out to test out the BCG and it runs ok, but I noticed that the rifle is now ejecting the cases rather aggressively forward...like 1 o'clockish. No cycling issues, but I am little concerned now, not to mention that at the indoor range 90% of my brass was lost to the brass god ahead of the firing line. Before the gas key had come loose, it was ejecting over my shoulder, about 4 o'clock. I have been running an H buffer, and the rifle had seen well over 2500 rds fired without an issue.

    I've already ordered an H3 buffer and I currently have an H2 I can use to slow down the cycle rate. Question is...does it matter where it is ejecting (other than the annoying loss of brass) as long as it cycles ok? Of pure curiosity, is it possible there was a bit of a gas leak in the key for quite a while and that allowed it to cycle slower using an H buffer? I went to a class in early Sep and ran 1000ish rds thru it, which may have accelerated the gas key issue that appeared shortly afterward.

    NC



    Owner/Instructor at Semper Paratus Arms

    Facebook: https://www.facebook.com/SemperParatusArms/

    Semper Paratus Arms AR15 Armorer Course http://www.semperparatusarms.com/cou...-registration/

    M4C Misc. Training and Course Announcements- http://www.m4carbine.net/forumdisplay.php?f=141

    Master Armorer/R&D at SIONICS Weapon Systems- http://sionicsweaponsystems.com

  4. #54
    Join Date
    Apr 2014
    Location
    Republic of Texas
    Posts
    619
    Feedback Score
    17 (100%)
    I wasn't really worried about the chart so much as reliability. Point taken!


    Quote Originally Posted by Iraqgunz View Post
    It was probably ejecting at 4 o'clock due to the gas leak. People really need to forget about that stupid pie chart. If it's working be happy. I would be using an H3 buffer if I wasn't going to run the A5.

  5. #55
    Join Date
    Jun 2011
    Posts
    76
    Feedback Score
    2 (100%)
    Quote Originally Posted by Iraqgunz View Post
    Staking is only debated by sub par companies that don't do it. I have seen very few stakings that were done correctly result in the key coming loose.
    I'm going to disagree with your statement. Young's Manufacturing doesn't stake.

    On the other hand, I've had problems with over staked carrier keys like BCM, where the bolt had sheared in two pieces and I was unable to get the bolt out without destroying the key.

  6. #56
    Join Date
    Feb 2008
    Location
    Washington
    Posts
    772
    Feedback Score
    0
    Quote Originally Posted by azoutdoorsman View Post
    I'm going to disagree with your statement. Young's Manufacturing doesn't stake.

    On the other hand, I've had problems with over staked carrier keys like BCM, where the bolt had sheared in two pieces and I was unable to get the bolt out without destroying the key.
    A gas key is a one time use item, once removed it gets replaced. Also, the way the BCM staking jig/tool works would not cause the screws to shear, that would have either been a defective screw or possibly an over torqued screw.
    Last edited by 556Cliff; 11-07-15 at 15:30.

Page 6 of 6 FirstFirst ... 456

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •