Haven't shot it yet - TRYBE Defense Muzzle Brake

I'm posting this to get the bot to leave me alone. I now get why people post reviews when they haven't thoroughly used the product. I havent fired my AR with this in place yet, but I did install it. Seems to be of decent quality, and not overly heavy as some brakes are. However- another reviewer really beat it up for not having flats so you can use a wrench to time it. I figured he was just "That guy". Now that I have it on the gun, I see his point but it's not that big a deal. I used a taped up screwdriver and carefully tightened and then relaxed pressure on the crush washer to time the brake. When I was done I was surprised to see some slight marring / deformation of the steel (Chinesium?) Where the padded screw driver shaft made contact with the port on the brake that I used. It wasnt anything major, but it did happen and is noticible. You've been warned.