Page 3 of 4 FirstFirst 1234 LastLast
Results 21 to 30 of 34

Thread: Interesting Issue, need input.

  1. #21
    Join Date
    Apr 2007
    Location
    FL
    Posts
    9,246
    Feedback Score
    28 (100%)
    Quote Originally Posted by CharlieKilo View Post
    I'm beginning to think my RRA lower parts kit sucks. I know for sure I need KNS pins, the trigger pin loves to walk out after only a dozen or so rounds.
    Wait wait wait.
    This is a key indicator of an incorrectly assembled LPK.

    Are BOTH legs of the hammer spring riding on top of the trigger pin?
    Something is awry if this is happening, and it doesn't have much to do with in depth analysis of LPK quality.
    Jack Leuba
    Director, Military and Government Sales
    Knight's Armament Company
    jleuba@knightarmco.com

  2. #22
    Join Date
    Nov 2007
    Location
    Utah
    Posts
    8,685
    Feedback Score
    4 (100%)
    Quote Originally Posted by carbinero View Post
    I had a similar problem with a 6.8spc. The fault was out-of-spec factory ammo: the necks were oversized. Slightly oversized (.307 versus .306) usually still chambered, and I saved the remaining few boxes for practice. More oversized (.308) I returned for refund.
    except that 6.8spc is no where near .307 or .306
    • formerly known as "eguns-com"
    • M4Carbine required notice/disclaimer: I run eguns.com
    •eguns.com has not been actively promoted in a long time though I still do Dillon special
    orders, etc. and I have random left over inventory.
    •"eguns.com" domain name for sale (not the webstore). Serious enquiries only.

  3. #23
    Join Date
    Jan 2008
    Location
    AZ-Waging jihad against crappy AR's.
    Posts
    24,902
    Feedback Score
    104 (100%)
    NO company is above making a lemon. Also unless the BCG came with the exact upper you have (and not purchased separately) it is possible to be out of spec.

    Quote Originally Posted by CharlieKilo View Post
    Point taken, however, considering the upper assembly, bolt, bolt carrier, firing pin, and CH are all Bravo Co. I doubt it would have left the factory if it was out of spec.

    Also, as I inspected the rounds, the primers on the PMC were dimpled more than the primers on the Winchester Q3131A1 that fire every time.



    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. #24
    Join Date
    Jan 2008
    Location
    AZ-Waging jihad against crappy AR's.
    Posts
    24,902
    Feedback Score
    104 (100%)
    If your pins are walking then something is either out of spec orhas been assembled improperly. Your trigger pin is held in place by the legs of the hammer and they go over the pin. One side must fit into the groove on either side of the pin.

    Quote Originally Posted by CharlieKilo View Post
    You know, I did not.

    Honestly, if I wasn't so anal retentive about how my shit works I would just pull the charging handle and move on with it. What is really weird, is I have shot PMC before. I bought a few boxes from Big5 once and those all shot fine.

    I just double checked the springs and they are all installed properly.

    I'm beginning to think my RRA lower parts kit sucks. I know for sure I need KNS pins, the trigger pin loves to walk out after only a dozen or so rounds. I think I will get a set of those and the better springs from brownells and be done with.

    The feedback has been great.



    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

  5. #25
    Join Date
    Jan 2008
    Posts
    3,714
    Feedback Score
    4 (100%)
    Quote Originally Posted by CharlieKilo View Post
    You know, I did not.

    Honestly, if I wasn't so anal retentive about how my shit works I would just pull the charging handle and move on with it. What is really weird, is I have shot PMC before. I bought a few boxes from Big5 once and those all shot fine.

    I just double checked the springs and they are all installed properly.

    I'm beginning to think my RRA lower parts kit sucks. I know for sure I need KNS pins, the trigger pin loves to walk out after only a dozen or so rounds. I think I will get a set of those and the better springs from brownells and be done with.

    The feedback has been great.
    it is possible that the primer was not fully seated. by attempting to fire it (and denting it) you seated it fully and the next strike ignited it. that would explain the why your buddy's gun fired it and yours did not. I see this all the time with reloaded pistol ammo, though not probable, it's possible this PMC ammo had the same issue.

    and btw, if your trigger pin is walking, your LPK is NOT installed correctly...
    never push a wrench...

  6. #26
    Join Date
    Jul 2008
    Location
    Richmond, Va
    Posts
    411
    Feedback Score
    2 (100%)
    Those rounds very well may have fired if you retried them in your gun in which case I would expect it was strictly ammo related.
    As the great warrior poet Ice-Cube once said, "If the day does not require an AK, it is good."

  7. #27
    Join Date
    Nov 2009
    Posts
    84
    Feedback Score
    0
    Quote Originally Posted by Failure2Stop View Post
    Wait wait wait.
    This is a key indicator of an incorrectly assembled LPK.

    Are BOTH legs of the hammer spring riding on top of the trigger pin?
    Something is awry if this is happening, and it doesn't have much to do with in depth analysis of LPK quality.
    Yes they are.


    Is it possible to have switched the hammer pin and the trigger pin?

    Looks like I will be rebuilding my lower after work tonight. I'll pull that crap out of there and give it a good once over.
    "People who think they know everything are especially annoying to those that do".

    -Anonymous

  8. #28
    Join Date
    Apr 2007
    Location
    FL
    Posts
    9,246
    Feedback Score
    28 (100%)
    The hammer pin and the trigger pin are the same.

    Before you tear everything apart you might want to just take a few pics of your lower and fire control group, as it might be fine and you might just have an oversized trigger pin hole or undersized pin.
    It helps the diagnosis a lot more when we can see the problem.
    We aren't saying that you are stupid for having these problems, making mistakes is how I learned a lot about my guns.

    You very well might have everything right and it's just an ammo issue. Then again, the opposite is also possible. Just trying to help you get it sorted out.
    Jack Leuba
    Director, Military and Government Sales
    Knight's Armament Company
    jleuba@knightarmco.com

  9. #29
    Join Date
    Jan 2008
    Location
    AZ-Waging jihad against crappy AR's.
    Posts
    24,902
    Feedback Score
    104 (100%)
    So I just re-read this thread and have to ask. Who makes the lower receiver? I see that you live in the PRK so my guess is it is an OLL. It is entirely possible that the lower receiver you have is out of spec and that is why the pins are walking out.

    Quote Originally Posted by CharlieKilo View Post
    Yes they are.


    Is it possible to have switched the hammer pin and the trigger pin?

    Looks like I will be rebuilding my lower after work tonight. I'll pull that crap out of there and give it a good once over.



    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

  10. #30
    Join Date
    Nov 2009
    Posts
    84
    Feedback Score
    0
    Quote Originally Posted by Iraqgunz View Post
    So I just re-read this thread and have to ask. Who makes the lower receiver? I see that you live in the PRK so my guess is it is an OLL. It is entirely possible that the lower receiver you have is out of spec and that is why the pins are walking out.
    SI defense Lower. (Sonju Industries)
    "People who think they know everything are especially annoying to those that do".

    -Anonymous

Page 3 of 4 FirstFirst 1234 LastLast

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
  •