Supposed to be one of the best muzzle breaks - Herrington Arms 9mm Handguns HA Universal Pistol Compensator

Have order a 5 1/2" threaded barrel for my Walther PPQ 5" SF match. Recoil is supposed to be reduced by 30%. Have order another muzzles break that is removeable. Will try them both (different designs) to see which on gives the max benefit. Will update review after testing 100 rounds thru each compensator. Will run 115 grain and 124 also to see if that have any positive of negative effect. The cost is very reasonable and if it even 20% reduction, it would be a good by at this price point.