well, i've went through over 200 rounds and the rifle is great ,not one problem.so i decided to scope it, i used an nc star mount $15  ,i also added a cheek piece $12 and a 3x9x50 simmons that i had bought on clearance at wal-mart for $25.after sighting in ,how about an .840 3 shot group  @ 100yds.looks like everything is true about the ar type rifles ,my savage 112fv in .223 is only marginally more accurate and not as much fun to shoot.thanks to all of you and this web site for assisting my ar build