I own m4's from both bushy and rra,,,, and they both are excellent weapons,,,, I prefer the rra trigger,,, but love the actual 14.5 inch barrel from bushy,,,, if you get the bushy,,, in an m4 configuration,,, get rid of the mini ycomp muzzle brake and get an a3 from kurts kustom firearms,,, its the best thing i ever did for my bushy!!!!!!!,,,, otherwise,,, all things considered,,, they are equal,,, give or take 100 bucks,,,lol