Hey guys, I am looking to build or buy an 18'' upper receiver. These are the rules for the build/buy -Complete upper must be less than 1000$ -Must be Sub MOA -Must be 18'' barrel, Chrome lined, Cold hammer forged barrel. MPI and HP tested -Must have rifle length gas system -Must be .223 and 5.56 compatible -Nickel boron BCG -M4 feed ramps -Must have 13'' or greater quadrail -Must be a flat top upper The limit here is a 1000$ so dont recommend I buy a DDM4 "Becuase its the best ever invented" Trying to build a solid MK12 style upper for sub 1000$! Lets hear the recommendations. I was looking into CCMG. what do you guys think?