UZI Talk Forums
+ Reply to Thread
Page 2 of 2 FirstFirst 1 2
Results 21 to 28 of 28

Thread: Are MPA's Fullsize and Velocity's Vmac9 upper interchangeable?

  1. #21
    Registered User
    Join Date
    May 2008
    Posts
    18
    It costs $6-8 to print an AR receiver, so most people print dedicated 5.56 and 9mm lowers (of both Glock and Colt varieties) as they need.

  2. #22
    UZI Talk Life Member
    strobro32's Avatar
    Join Date
    Sep 2007
    Posts
    7,341
    That is cool looking. Good job.

    As soon as the plastics become equal in strength as glass filled nylon I'll buy a printer.

  3. #23
    Registered User
    Join Date
    May 2008
    Posts
    18
    You can buy glass-filled nylon today under names such as Nylon Plus, it's a little more advanced than most people need to do since most designs are based around PLA or PLA+. PLA+ is nearly as strong as glass-filled nylon, until you get above 130-140F, so you can't leave PLA printed guns in a hot car.
    Nylon requires completely dehydrated storage-to-printer filament handling, so you need teflon tubing the entire way from your storage box to the print head, while the PLA spool can be placed on a rack in the open air while in use and stored in a desiccant-containing box with minimal concern.

    My brace finished printing, already have a few areas to improve for the next print (shortening to a 1" or 3/4" strap, a few filets, etc), but it's usable and turned out well. The lock-up is solid.


  4. #24
    UZI Talk Life Member
    strobro32's Avatar
    Join Date
    Sep 2007
    Posts
    7,341
    Looking forward to the videos.

  5. #25
    Registered User kevinoneil68's Avatar
    Join Date
    Dec 2012
    Location
    Ihate, NY
    Posts
    228
    Quote Originally Posted by strobro32 View Post
    Can that be CNC milled in aluminum? I'd like one.
    Lost PLA & Vacuum casting.

    https://www.youtube.com/watch?v=EGNnH_xbjR4

  6. #26
    Registered User rickthecabbie's Avatar
    Join Date
    Jun 2011
    Location
    Beaverton, Or.
    Posts
    114
    Beware! I do stupid things for fun. This is probably a bad idea and nobody should ever do anything I do.
    Please do not do this.

    Are MPA's Fullsize and Velocity's Vmac9 upper interchangeable?

    In some ways yes. I own both, and have discovered that the VMAC upper will fit and function in the MPA lower.
    As for the MPA fitting in the Mac Daddy lower, Yes and no, the cutout for the front trunnion is too shallow for the MPA upper.
    You could probably cut it out a bit deeper and make it fit.
    From what I can see the width of the uppers doesn't really interfere with the function.
    On top of that, the hammer on the mac Daddy gets caught on the underside of the MPA upper because the cutout
    for the hammer is shorter on the MPA than on the VMac.
    If one really wanted to, I suppose you could make the cutout longer and force it to work.
    Again, this is a bad idea. You are on your own.

  7. #27
    UZI Talk Supporter
    Gaujo's Avatar
    Join Date
    Sep 2013
    Location
    Raleigh, NC
    Posts
    3,441
    Now I'm def getting a printer. So semi bolts?

  8. #28
    Registered User
    Join Date
    Jan 2021
    Posts
    23
    Quote Originally Posted by Kharn View Post
    I made a few adjustments to make it fit my upper and add name/serial/etc, the next revision may be 11/9 compatible but for now the basic design is VMAC only.

    Hot off the printer


    Waiting for brace


    An Ender 3 Pro printer is around $200, this receiver cost about $8 worth of filament, all the software is free for non-commercial purposes. It's a ton of fun for the mechanically/computer inclined.

    FreeMenDontAsk puts out awesome work, along with the rest of the Deterrence Dispensed crew. The official release of this receiver is a ways off, this is a test print, and I can't distribute the STL file. Find DD on Keybase and you'll be able to join test efforts there.

    (The main differences I found were the front takedown lug extending 1.5mm lower and the side charging handle boss being 2mm lower on the MPA)
    I've seen those. The new MacDaddy supposedly holds up well with the Vmac9. I bought an Ender 3 for my son a while back, I've been wanting to test it out. The file is free and open source on here.

+ Reply to Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts


Please consider becoming an UZI Talk Supporter.