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What parts can I swap on my M&P15A to make it a tank?

Discussion in 'Black Rifle Forum' started by TalkToTheGlock, Dec 20, 2009.

  1. TalkToTheGlock

    TalkToTheGlock Zombie Hunter

    Sep 26, 2009
    Hey all,

    I'm a new owner of a S&W M&P15 and I am new to the black rifle world. I was wondering what I could swap out internally to make this rifle as sturdy and reliable as possible. I hear people doing this and that to their rifles to make them as reliable as possible but I am in the dark.

    Any advice would be appreciated,


  2. msabo1023


    Jul 20, 2009
    i recently bought brand new a mp 15x and always read about the o ring prob/solution and almost ordered the extractor upgrade kit from BCM similar to this one. but the first time i shot the gun and brought it home to clean it i noticed mine already had this upgrade. just saying, but not sure your rifle is the same but it should be
  3. MySiK26

    MySiK26 ******

    Tagged for future reference
  4. DougW

    DougW Native Texan

    May 9, 2003
    North Texas
    Clean it, oil it, and shoot it. If you want 100% reliability, but a 2nd one.Anything mechanical can fail no matter what you do to it. Have spare parts, keep it well lubricated, make sure your mags all function, and get lots of practice.
  5. Cgrubb1


    Dec 2, 2009
    Switch out the bolt carrier group. Get a BCM full auto bolt. This will slow down the cycle a bit, and keep everything a little cooler, and help extend the life of everything a bit. Also add an H-2 buffer or the spikes tactical st2.
  6. Fire_Medic

    Fire_Medic Polymer Butcher CLM

    May 19, 2008
    The Gunshine State
  7. shotgunred

    shotgunred local trouble maker

    Mar 1, 2008
    Washington (the state)
  8. QNman

    QNman resU deretsigeR Silver Member

    Oct 5, 2005
    St. Louis, MO
    Good ammo, good sights... done. Maybe some CLP?
  9. internal


    Feb 9, 2006
    You need a BCM BCG and a H1 or h2 buffer.
  10. furioso2112


    Dec 12, 2007
    I can't believe the places I am finding answers to little questions this week. I came in here intending to post "change the transmission and treads" in jest. I clicked on the link and figured out what to do with the BCM extractor upgrade kit o-rings I just installed on two of my bolts - that seemed the only logical place to put them, but the instructions even say "will probably not be needed," so I left them far. Might throw them in and give it a whirl.
  11. AK_Stick

    AK_Stick AAAMAD

    Jan 20, 2004
    Alaska, again (for now)
    Nothing, you're gun is fine the way it shipped to you.

    Cgrubb1, changing the bolt out, will not make the rifle run any cooler.
  12. betyourlife

    betyourlife on a GLOCK

    May 10, 2004
    Seattle, WA
  13. m814


    Dec 31, 2007
    THIS, check the staking on it on the gas key and the castle nut on the stock. If they are both factory staked satisfactorily, shoot the P S out of it and clean lube well. Enjoy. The S&W is about as fine as they come for the money and generally the ones I have seen have been SAT in every way.

  14. IMO, you're going to waste your money and probably introduce problems by fixing something that isn't broken and working on a gun you aren't familiar with.

    Detail strip it so that you learn a little about its internals, then maybe buy a field replacement kit that contains spares of stuff that might eventually break in any brand of AR, and go shoot the crap out of it.

    Guns are metal and made by humans, they break and jam. Learn to live with it. S&W makes fine guns and there shouldn't be anything wrong with it out of the box.