I have had a couple 20's, I have tried ghost rocket, zev, lighter springs, polishing everything, and it remains difficult to achieve the accuracy that I can get with a simple 4 inch smith and Wesson 44 magnum. Good sights are important, but I wonder if the inherent accuracy of the Glocks from the factory is stellar, add the difficult to master trigger in to the mix and its a challenge for me to make hits at distance. The way the glock trigger breaks and slaps is the biggest problem for me.