Oh crap! You have a muzzle brake on that thing, there’s at least one Match RO here that will refuse to RO you and if he had his way would have you thrown of the range.
Thanks. Yes muzzle brakes are loud. I shoot indoors and outdoors with this, I double up my hearing protection indoors (foam earplugs and my Peltors or Pro Ears). It’s loud but no more loud than my 11.5" w/A2 flash suppressor which is about the same as an ‘Open’ gun in 38 Super or 9 MAJOR. If my M4-2000s were a hell of a lot lighter I would just shoot suppressed.
I’m liking it a lot better too. Acquiring the reticle seems faster, it’s more balanced too. I know what you mean my ‘driving’. It being lighter it seems to not want to keep going while transitioning between targets (less momentum). I do need to chrono it now to verify that it’s making power factor w/55gr.