How many of you change the factory muzzle break on your AR 15? Why? When I bought my Stag from a gun smith shop they sold me on a break they designed and made. He said the factory brake was not to good and was very loud to the shooter. I won't repeat his exact description. Looking at the stock brake and his brake, I could tell that because of the position of the "holes" that his MIGHT be better so I bought it. I must say that it seems pretty good but I didn't shoot the gun with the stock one so I can't be sure. There does not seem to be much "upward" motion in the barrel when I shoot. I am happy with it.