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New M&P15 with feeding issue?

Discussion in 'Rifle Country' started by Wombatz, Jul 3, 2019.

  1. MistWolf

    MistWolf Member

    Joined:
    Aug 17, 2005
    Messages:
    3,341
    [​IMG]

    Is that dent from the bolt? When you had your malfunction, was the bolt past the cartridge base?
     
  2. Wombatz

    Wombatz Member

    Joined:
    Jan 14, 2012
    Messages:
    12
    Location:
    Chiloquin, Oregon
    That was my first assumption. I just wanted to make sure and not just burn through ammo if there was something I should be doing.


    The damaged rounds were almost fully chambered and the bolt was properly "locked" to them, but not fully into battery. I gave a good pull on the charging handle to pull them out. So maybe the dent is from the feed ramp?
     
  3. Robbins290

    Robbins290 Member

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    May 8, 2011
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    2,070
    Location:
    Limerick, maine
    I would send it back to smith and wesson. They will take care of you. I had problems when i bought my first ar also. but i found out i was loading 31 rounds and not 30. with a M&P15 milspec with Pmags.
     
  4. Wombatz

    Wombatz Member

    Joined:
    Jan 14, 2012
    Messages:
    12
    Location:
    Chiloquin, Oregon
    Update...

    The Odinworks adjustable buffer finally came in and I have tried it at the low end setting and thus jumping from the original 2.9 oz to 3.7 oz. That was just perfect to balance the overgas. I am now ejecting at 3:00 - 4:30.

    The failure to feed continues to improve. The last two outings (second one with the new buffer) had zero failures. I have also gotten all the tools and supplies to reload .223 so my last test included both factory and hand rolled. All were very good. Since I am just starting to load for this it included starting rounds (55&62gr) as slow as 1100 fps over the chronograph. I don't have full chrony results since I forgot the diffusers and it was a blue sky; so I got a good number of "err1", but did get enough valid results to do some more loading and testing.

    Again, a big thank you to all. I am glad to have learned what I have about the AR-15 / 5.56.
     
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