I have 5 chinese m14s , my 2009 polytech Bell Lifestyle is the best one , most accurate, action smooth as butter and best finish , parkerizing seems a bit more grey than the others. im at well over 2000 rounds without even one little hiccup only replaced the rear sight, most of my others i had to work out a few bugs .. I have seen rifles from pretty much every batch since the 2007 Marstar rifles and i would say the 2009 polytech Bell Lifestyle imports were the best .