Tacfire muzzle brake - Tacfire .223/.556 1/2inX28 Tpi Compact Size Muzzle Brake

I recently purchased two of the Tacfire muzzle brakes for my ARs that Im converting to featureless builds to comply with California's new assault weapons categorization/registration. Both installed nicely, though I had to use two crushwashers on one of my AR builds to get the angles aligned properly. No problem since i had the old crush washer and the Tacfire comes with a new one, so a little sanding later, the ports were perfectly aligned and looking good. I havent taken the Tacfire out for a fire test yet, so cant report on whether in improves performance. I hope to do that as soon as the weather cooperates.