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Thread: The UltiMac, a modular Mac upper.

  1. #1
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    The UltiMac, a modular Mac upper.

    From the old thread (http://www.uzitalk.com/forums/showth...-Of-Your-Upper), here's the info:
    I spent some time designing stuff, making stuff, then throwing away stuff.
    This is my current upper design, the UltiMac.
    The upper uses an internal recoil mechanism, no drilling in the rear (unless you're in to that sort of thing, I don't judge)
    Will not work on SAPs, open or closed bolt.
    Will not function or fire without registered lower receiver attached.
    Uses AR15 bcg, barrel, and handguard.
    Modular design, magwell is removable and can be replaced with:
    AK47,
    AK74,
    AR15,
    MP5,
    UMP,
    PPSH41,
    Suomi,
    Glock,
    Colt,
    Thompson,
    M1 carbine,
    Greasegun, etc.
    Scorpion EVO (enough people asked, so I'm adding it)


    7.62x39 in AK mags:







    5.56 via AR15 mags:















    Special thanks to XRayGuns and my friend Brian Butler for their help in designing this.

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    Last edited by theredneckengineer; 11-22-2019 at 07:45 AM.

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    You have a waitlist?

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    Belt-fed option?

  4. #4
    Registered User MPA guy's Avatar
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    Tagged for the same info. I want one.

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    Quote Originally Posted by Salty_Seafarer View Post
    You have a waitlist?
    Email me.
    theredneckengineerATgmail.com
    Include your UT username, real name, what model of mac you want upper/s for, and what magwell conversions (and calibers) you're interested in.
    Last edited by theredneckengineer; 10-24-2019 at 10:36 AM.

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    Quote Originally Posted by MACchat View Post
    Belt-fed option?
    This thread is just the modular upper for the M10, although I'd like to see how much interest there is in an M11 or M11a1 version.

    I'll update it with pics and info of the belt fed upper as I go along, but if there's more M11 upper interest, I'll work on the M11/a1 UltiMac before the belt fed.

  7. #7
    Registered User Landric's Avatar
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    That looks awesome!

    Will it work with a .22 LR kit of some kind?

    At any rate I'm quite interested in a version in 7.62x39mm with AK mags.

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    Quote Originally Posted by theredneckengineer View Post
    This thread is just the modular upper for the M10, although I'd like to see how much interest there is in an M11 or M11a1 version.

    I'll update it with pics and info of the belt fed upper as I go along, but if there's more M11 upper interest, I'll work on the M11/a1 UltiMac before the belt fed.
    Sounds good! (Also, email sent.)

    Functional, aesthetically pleasing, well-priced M10/M11/M11a1 modular uppers...

    This is what the market wants.
    Last edited by MACchat; 10-19-2019 at 07:53 PM.

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    Quote Originally Posted by Landric View Post
    That looks awesome!

    Will it work with a .22 LR kit of some kind?

    At any rate I'm quite interested in a version in 7.62x39mm with AK mags.
    There's some info on 22 conversions on the last 2-3 pages of the old thread, but the short details are that I'll have to make a custom 22 conversion for it.
    It will employ a 10/22 magwell, a S&W MP15-22 magwell, or just a standard AR15 magwell for Ciener/CMMG mags.

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    A modular magwell is a great option.

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    Interesting.

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    Emailed for a m10 version with AK mags

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    Email incoming!

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    Email sent! The whole modular thing is too good to pass up.

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    Registered User MPA guy's Avatar
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    Reservation email sent for the M10 and AR magwell for starters.

    The videos look totally awesome.

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    Email sent

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    For around $1k I’d buy right now if an m11/9 version was available. That’s a screaming deal.

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    Registered User MPA guy's Avatar
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    Looking forward to seeing this come to the market. So many possibilities that it's definitely going to be a game changer.
    Last edited by MPA guy; 10-19-2019 at 12:37 PM.

  19. #19
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    I'd be in for an M11/9 belt fed version.

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    Quote Originally Posted by Hey... View Post
    For around $1k I’d buy right now if an m11/9 version was available. That’s a screaming deal.
    I'll keep everyone updated on the M11 and A1 uppers via this thread; I am working on the design and I'll start machining prototypes in the coming weeks.
    Last edited by theredneckengineer; 11-22-2019 at 07:46 AM.

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