I personally would not choose a gun based on weight until having shot both heavy and light guns. After owning and shooting in competition M&Ps, Czs, and 2011s I found with heavy guns that my splits are slightly faster on double taps, Bill drills, and stuff like that, but every aspect, including stage times are faster with the light M&Ps. The heavy guns are nice when shooting paper, but the light guns really shine when shooting Steel