Hard to beat for the price. - Primary Machine Glock 9mm Stealth Compensator

I bought this along with the SGM Tactical G19 threaded barrel as a cheap solution to evaluate using a comp on my Vickers G19. As far as it's effectiveness as a comp I was happily surprised at the reduction of nose climb and felt recoil. It absolutely works and brought my mag dumps from 4" at 7 yards to 2.5" - 3". My real purpose for a comp was to keep powder from trashing my Surefire lights. In that regard it's slightly shorter than a KKM and doesn't cover the light completely. I'm still getting a little powder build up at the end of my light body but not on the lens. That being said I'd always planned to get the KKM Roland barrel and comp so this will go on my wife's 19.
One thing I don't like but it is what it is at this price is the mounting solution. Having to permanently attach it to a barrel using red loctight and set screws on the barrel threads sucks.