The slant brake should only be used on short barrel vz58's. On a non restricted it over compensates because of the higher Leverage it exerts on the user (longer lever=greater Force on the fulcrum point with less force). Feels like someone's slapping the barrel down with every shot you take, probably throws you off more than no compensator. I'd go with the factory cz type with the 3 or 4 holes per side, only downside is they are big and heavy and you really feel it out there. If that bothers you then go with the shorter zahal one.