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Bolt carrier group upgrade?

Discussion in 'Black Rifle Forum' started by Cole125, Dec 1, 2011.

  1. Cole125

    Cole125 Silver Member

    7,584
    2
    Apr 5, 2008
    Far West, USA
    Gentlemen

    I would like to upgrade the bolt carrier group on my CMMG M4 LE upper, and I would like some input on what to get. I have been looking at BCM, DD, LMT, and Wilson Combat and cannot decide which to get. :dunno:

    I know they are all good, and much better than what is in my CMMG, but is which is best and the best value?

    Help me make a choice! :wavey:
     
  2. bmoore

    bmoore

    4,373
    5
    Jan 15, 2006
    Under a regime.
    All 4 of those brands are top of the line bolt carrier groups, they would make fantastic upgrades. The best value is Palmetto state armory's bolt carrier group for 99 dollars right now. Its got all the specs as the 4 you mentioned. Carpenter steel, MP tested........ There a newer company but I have had great experience with an upper from them and just ordered one of there carrier groups.
     

    Last edited: Dec 1, 2011

  3. UniversalBrow06

    UniversalBrow06

    2,198
    0
    Jun 19, 2007
    TN
    I know this is not on the list, but what about a Spikes Ni-B?
     
  4. faawrenchbndr

    faawrenchbndr DirtyThirty fan CLM

    36,086
    450
    Nov 24, 2005
    Troy
    First time in 45 years I've ever herard that,.......:rofl:

    BCM
    DD
    LMT
    WC
    In that order,......
     
  5. MrMurphy

    MrMurphy ********* Moderator Moderator Millennium Member Lifetime Member

    12,972
    3
    Jan 16, 2001
    Buried in the X-files
  6. boomhower

    boomhower

    3,323
    2
    Feb 14, 2010
    North Carolina
    Any of the big brands is fine. The Spikes NiB is a good choice as well. I have a FZ NiB BCG and will never have another that isn't coated. I've got a DD BCG that I need to send off to WMD to have coated. DD, BCM, LMT, etc are all fine choices.
     
  7. bmoore

    bmoore

    4,373
    5
    Jan 15, 2006
    Under a regime.
    Easy there internet police, I was speaking in general terms not being gnats ass "Milspec carpenter No. 158 steel". "magnetic particle insptected".
     
  8. pag23

    pag23

    2,058
    552
    Jul 28, 2008
    Eastern PA
    :rofl::rofl:

    Isn't Carpenter steel the same as Plumber's putty in Lowe's...:rofl:
     
  9. HAIL CAESAR

    HAIL CAESAR Senior Member

    5,266
    23
    Mar 1, 2007
    In my shop
    Shoot the one you got. Take the $100 dollars a new BCG cost and buy ammo.
     
  10. K. Foster

    K. Foster

    2,459
    365
    Feb 19, 2002
    Mo.
    I see no reason to swap out the entire BCG. Make sure your gas key is properly staked and just buy another bolt.
     
  11. Cole125

    Cole125 Silver Member

    7,584
    2
    Apr 5, 2008
    Far West, USA
    Thanks for the input fellows, just wanted to see what yall had to say.

    I went ahead and ordered a BCM auto bolt carrier group while they are still on sale along with a gunfighter charging handle. My first AR build will be almost finally done! :cool:
     
  12. tripleL

    tripleL

    101
    0
    Jan 27, 2009
    North Carolina
    Similar question from a newb:
    My MP15 was in storage for a while, noticed my BCG feels a little rough, maybe slight pitting? Is this cause for concern (purchasing a new one) or am I fine to continue with my ~1,000 rounds per year through it as long as I'm cleaning the hell out of it?