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Search results

  1. J

    Buffer Spring Noise

    I just finished up the lower for a MK12 build and noticed that the buffer spring is noisy and gritty sounding with I pull back the charging handle. I am comparing it with my STI lower, that when I pull back the charging handle is so quiet and smooth. Is there something I can do to help with...
  2. J

    STI International Inc. Competition Rifle

    Does anyone have some firsthand knowledge or experience with the STI Competition Rifle? I purchased one about a year ago with a serial number less than 20, so one of the first ones made. I know they make a really good pistol and thought I would take a chance with it. I fired some off the shelve...