the problem with that is that it will create a break in your nice tenifer finished slide and anything they put on there won't be as durable. Personally I don't think muzzle flip is that bad on the P99. I shot a federal qualification on a TQ-15 target this wekend at the range with some marshals that were up there practicing and scored 1 point below perfect score with my P99 QA. Fun way to burn 60 rounds, for sure.