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Ok, polymer lowers, how about a polymer upper?

Discussion in 'Black Rifle Forum' started by dscottw88, Feb 23, 2012.

  1. dscottw88


    Jan 11, 2009
    I know it's been done, Bushmaster has a line of carbon 15's that seem to get different vibes depending on whether the person likes plastic or not. But while researching a super light weight build, I noticed that bushmaster has stripped polymer uppers.

    But what I'm asking is this; Does anyone make a monolithic polymer upper?

    Here is a mock up of what I'm thinking...
    Last edited: Feb 23, 2012
  2. i will have to look, but i think my s&w mp15-22 upper is polymer.

  3. WoodenPlank

    WoodenPlank Who?

    May 15, 2010
    NW Florida
    That's a dedicated .22 upper, though, not one intended for 5.56.

    OP, I'd suggest sticking to aluminum. The slight weight savings you would get by going to a polymer receiver can easily be made back in other areas (barrel profile, rail/handguard, stock, etc), and the polymer receiver potentially compromises safety and reliability.
  4. The Pirate

    The Pirate HARRRRR!!!

    Nov 7, 2006
    Walltown, KY
    I own a carbon 15 stripped upper that bushmaster caused me to ruin with bad information. After seeing how week they can be I will stay away from them. Good luck

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