I see mac-11 uppers for sale at:

  1. Aves
  2. Parts Dispensed
  3. JC Arms
  4. MasterPiece Arms

Since MPA only has the side charging upper immediately available, can I purchase a side charging bolt from another vendor ? I’m guessing MAC-11 is a specification as well, so parts should be interchangeable.
If not, whats the opinion of the complete uppers from Aves ?

  • nightallianceEnglish
    5·
    1 day ago

    There is no feed ramp. MPA has bolts available. JC Arms feels the best tbh but I like left side charging. My upper is some old maf chimes rn.

    • nightallianceEnglish
      6·
      1 day ago

      We made different height mag releases to lock the mag up in the right spot for it to feed nicely. Some need more or less. Mine needed +.25. That, in conjunction with the location of the mag, allowed the timing to work properly without a feed ramp.

      • pv2025OPEnglish
        3·
        1 day ago

        all good to know… ill be back in touch once i start the build. eta 1-1.5wks just wanted to get some feedback first before deciding if the build is currently worth it or not… in the sense of not too many tweaks are needed to get the thing to work.

        i already have two unseen builds complete in the past 7 days…

        1. r3
        2. r45

        so anything he releases im on it…

        thanks!

          • pv2025OPEnglish
            4·
            1 day ago

            yeah… im already there… debating if i should pick up a second upper… already have one in flight.