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Mating Bushmaster Carbon-15 lower and M4 non-carbon upper question

Discussion in 'Rifle Country' started by ZBill, Jul 15, 2012.

  1. ZBill

    ZBill Well-Known Member

    Any issues in using a Bushmaster Carbon-15 lower with a Bushmaster M4 non-carbon upper? Use for light range duty - 500 rounds per year.
    Thanks, Bill
  2. NG VI

    NG VI Well-Known Member

    Can't imagine there'd be anything wrong with that, the lower just holds some parts together, it isn't a very high-stress piece of equipment.
  3. ZBill

    ZBill Well-Known Member

    Thank you

    Thanks NG VI - I had assumed it would be ok and thanks for the confirmatory input.

    Regards, Bill
  4. kd7nqb

    kd7nqb Well-Known Member

    I saw one of these Carbon 15 rifles today for the first time. Really impressed with how light it is.

    Anybody here actually put a different upper on the carbon 15? I am specifically thinking a .300 blackout upper for hunting season.
  5. Numnuts

    Numnuts Member

    I have a top load carbon 15. Is it ok to simply change the lower to modify to mag feed?
    I apologize for my ignorance, newbie.
  6. kd7nqb

    kd7nqb Well-Known Member

    First to address my own question. I called bushmaster they said no problem it's all built to the same space other than the barrel nut.

    @numbuts: I dont know of a top load model you might be thinking if something different.
  7. xfyrfiter

    xfyrfiter Well-Known Member

    Newbie; could that be a kalifornistan version with a bullit button?

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