Ruger ar 556 malfunction

Discussion in 'Black Rifle Forum' started by bocephus549, May 24, 2020.

  1. bocephus549

    bocephus549 Bo Knows.......

    Messages:
    6,306
    Likes Received:
    63
    Joined:
    Sep 29, 2002
    Location:
    Tennessee
    Bought the Ruger and fired it for the first time yesterday. Firstmag .223 had 3 malfunctions. Easily cleared no problem. Second mag also .223, first round chambered and the bolt locked forward. Had to mortar it to clear the round. After being cleared emptied all 30 rounds with no malfunction.

    Tried all three three magpul mags fully loaded. Chambered a round, removed the mag then tried to clear the live round. Bolt stuck in-forward position the charging handle won’t move it at all. Only way to clear the live round is using the mortar technique to unlock the bolt.

    All this was done straight out of the box, no cleaning, no extra lube etc. Do you think this may a serious problem or just a break in issue. I’m new to the AR platform so any advice from the experts would be greatly appreciated. Thanks, Bo
     
  2. dkf

    dkf

    Messages:
    6,456
    Likes Received:
    1,414
    Joined:
    Aug 6, 2010
    All the same ammo? If it was all the same ammo I'd try a different brand, preferably 5.56. Get a bronze chamber brush and some solvent and scrub the chamber. Lube it well with some kind of gun oil. Then shoot it. If it still malfunctions after that I would contact Ruger and then let them deal with it on their dime from there. Unless you want a project. A new AR should not give you these problems. I have never had an AR need a break in period to function.
     

  3. bocephus549

    bocephus549 Bo Knows.......

    Messages:
    6,306
    Likes Received:
    63
    Joined:
    Sep 29, 2002
    Location:
    Tennessee
  4. rock_castle

    rock_castle Proud Nationalist who loves his country

    Messages:
    19,305
    Likes Received:
    40,979
    Joined:
    Jan 22, 2014
  5. DrewBone

    DrewBone

    Messages:
    4,762
    Likes Received:
    8,023
    Joined:
    Oct 19, 2016
    Location:
    The Foothills of south western NC
    I'd perform a field strip, then check the chamber for any abnormality (like rust, rough machining, etc.). If the chamber looks good then I'd use a generous amount of CLP spray on the bolt/bolt carrier, reassemble it (known as running the rifle "wet"), and fire it for a good 100 rounds or so with some quality brass cased 5.56x45 ammunition (Federal/Lake City XM193, XM855, etc.), which should, barring any mechanical or fitment problems, help the barrel extension/bolt lugs/bolt cam pin/bolt carrier to all break in nicely together. Then field strip it again, clean, and relubricate the rifle sparingly with whichever type lubricants you would normally use.

    If the above doesn't remedy the problem then I wouldn't hesitate to give Ruger a call:

    1 (336) 949-5200

    Best wishes for a simple solution and a happy outcome :D
     
    GlockFan7 likes this.
  6. bocephus549

    bocephus549 Bo Knows.......

    Messages:
    6,306
    Likes Received:
    63
    Joined:
    Sep 29, 2002
    Location:
    Tennessee
    Just tried America Eagle .556 with the same result. It only takes a light tap on the butt stock to free the bolt. Charging handle won’t budge it.
     
  7. Bradley T

    Bradley T

    Messages:
    5,433
    Likes Received:
    4,597
    Joined:
    Jan 19, 2015
    When you buy a new AR, it is probably a good idea to swab the barrel out (you don't know what was left in there.) Get some LSA and lube the bolt carrier group, charge handle and in side that race up in the top of the receiver- and also a little on the "teeth" on the bolt. Some places in an AR definitely do need some oil.
     
    Last edited: May 24, 2020
    PatinAz and BigBull 301 like this.
  8. GlockFan7

    GlockFan7

    Messages:
    6,008
    Likes Received:
    3,977
    Joined:
    Apr 14, 2013
    Some good suggestions here. I second what DrewBone had to say. Ruger was my first AR and American Eagle in .223 and 5.56 is all I've ever run in it. I keep it lubed with either Breakfree-CLP or Eezox. I've had no issues with mine at all.
     
  9. Tbags

    Tbags

    Messages:
    700
    Likes Received:
    494
    Joined:
    Apr 4, 2010
    Location:
    FL
    As mentioned it is recommended to clean it prior to using it, including using a chamber brush to the chamber. The oil the bcg well except the face bolt and try again.

    Looking for issues in the chamber isn't a bad idea after the cleaning.
     
    BigBull 301 likes this.
  10. ReaPer105

    ReaPer105

    Messages:
    5,958
    Likes Received:
    11,685
    Joined:
    Oct 2, 2017
    Clean and lube it properly before shooting it again. It ain't broke until you try to use it properly and it doesn't work.
     
    BigBull 301 and fjrdc like this.
  11. The Father

    The Father

    Messages:
    2,773
    Likes Received:
    5,016
    Joined:
    Jun 26, 2017
    Location:
    ARIZONA
    This and the chamber brush. My chamber brush I put on a drill and at slowwwwwww speed I brush it up.
     
    dla, Current Resident and pgg00 like this.
  12. pgg00

    pgg00

    Messages:
    18,135
    Likes Received:
    41,767
    Joined:
    Jun 1, 2008
    Location:
    Fled the emerald triangle
    May need to be broken in some. Clean and lube properly.

    An example. My old agency purchased brand new Colts. Every single one was a single shot to start. Fire one, break it open, put a rod down the barrel and knock out the casing and repeat. Wasn't until each gun had close to 500 rounds that it would get through a full mag. Colt told us it was normal. This was back in 2001ish time.
     
  13. fjrdc

    fjrdc

    Messages:
    1,374
    Likes Received:
    860
    Joined:
    Feb 12, 2009
    Location:
    MN-Moonbat&Lemming Central
    Run It Wet , BCG dripping ,at least for the first 500 rounds
     
  14. The Father

    The Father

    Messages:
    2,773
    Likes Received:
    5,016
    Joined:
    Jun 26, 2017
    Location:
    ARIZONA
    Run it like sloppy seconds
     
  15. quantico

    quantico 1911 lover Millennium Member

    Messages:
    9,543
    Likes Received:
    6,627
    Joined:
    Sep 15, 1999
    Location:
    Wisconsin
    Ever think of cleaning it and putting oil on the bolt and action ? Are you new to the ar or never seen or shot a gun before ?? Seems anyone with any gun experience would try to clean and put lube on a new gun.
     
    dla and PattonWasRight like this.
  16. faawrenchbndr

    faawrenchbndr CLM

    Messages:
    41,855
    Likes Received:
    7,920
    Joined:
    Nov 24, 2005
    Location:
    Denver, IN
    Always clean and lube before shooting.
    Often the factory lube/preservative will dry and gum up, thus causing issues.
     
  17. MedicineBow

    MedicineBow Formerly TFLWYO

    Messages:
    1,269
    Likes Received:
    1,193
    Joined:
    Mar 3, 2002
    Location:
    Wyoming
    I just sent a Springfield Saint AR pistol back to Springfield for the exact same issue. Absent some serious gunk in the chamber, a gun that will not allow the user to extract a live round from the chamber using the charging handle and a reasonable amount of pressure is dangerous and unacceptable. In my case, I was using ammo that had been run through a case gauge to ensure that it was within SAAMI spec. I also had used an overall length gauge to be sure that the bullet was not jamming on the lands. It should not make any difference at all whether the bolt is wet or not.
     
    bocephus549 likes this.
  18. bocephus549

    bocephus549 Bo Knows.......

    Messages:
    6,306
    Likes Received:
    63
    Joined:
    Sep 29, 2002
    Location:
    Tennessee
    Sent it back to Ruger today. Let them deal with it. Let me be clear. Every round chambered could not be ejected using the charging handle no matter how much pressure was used. Had to use the mortar technique to eject the round. Not a cleaning issue that some have mentioned.
     
    dkf likes this.
  19. B C

    B C

    Messages:
    17,038
    Likes Received:
    66,344
    Joined:
    Feb 26, 2017
    Weird. Definitely out of spec. I've heard of that happening with steel cased ammo in the Ruger, but not brass. Hopefully, Ruger sorts it out for you quickly.
     
  20. illrooster132

    illrooster132

    Messages:
    3,531
    Likes Received:
    3,411
    Joined:
    Sep 8, 2007
    Location:
    miami
    I dont know jack , but had experience the same problem with new AR, clean it and lube the bolt. I seen it 4 times in different rifles. same solution.