Read the whole thing, which opens:
The following are some thoughts I would like to share based on traveling the world while training various military, law enforcement and civilian personnel in pistol and carbine marksmanship. Some of you may agree, some may disagree, but my goal is to really get you thinking about what I said when you’re done reading this.
Muzzle brakes are great in a three gun match, but almost completely worthless in the real world. If you ever need to use your carbine while in confined spaces, as part of a tactical entry team, or during nighttime fighting, then you have no business putting one of these on your gun. Period.
If you just go to a class and pound a bunch of rounds down range trying to look cool then it is tailor-made for you. So are Ronald McDonald shoes…
Get realistic training NOW, while you can.
Or are you naive enough to think HRC will permit non-LEO tactical training in her empire?