I want to replace the bbl on my M4. I want to be able to shoot more bullets with more accuracy. I can only get 1.25 MOA with 75gr HOR/77gr SMK handloads. Everything else is horrible (4 MOA or worst). My wish list: * M4 profile, M4 ramps, 1/8 twist, wylde chamber, polygonal match rifling grooves. * not decided between ss v chromoly, feel free to chip in. I have pretty much narrowed it down to either a bbl from Black Hole Weaponry (BHW) or Noveske. Some questions: * Can't picture a ss bbl in my M4. BHW offer a matte black finish. What's been your experience with this finish? How close it is to parkerizing? * Heard some tall tales about Noveske bbls performance. are they true? Is it true Noveske bbls yield 100-200 fps more muzzle velocity? * Does anyone have any real world accuracy data on both these bbls?